LOS ANGELES, Calif. - San Francisco 49ers linebacker Aldon Smith was arrested Sunday at Los Angeles International Airport after authorities said he became belligerent during a security screening and threatened that he had a bomb. The 24-year-old player was randomly selected for a secondary screening at Terminal 1 and became unco-operative with the process, airport police Sgt. Karla Ortiz said. She said he told a TSA agent that he had a bomb before walking to the gate. When airport police officers caught up with him, Ortiz said Smith became unco-operative and was taken into custody. A witness video posted on TMZ.com shows Smith exchanging words with an officer as he was being handcuffed and escorted out of the gate area. Smith was booked for investigation of making a false bomb threat. FBI spokeswoman Laura Eimiller said anyone who makes a bomb threat at an airport is potentially subject to federal charges, although no such charges have been filed against Smith. A message seeking comment from Smiths agent wasnt immediately returned. With the arrest, Smith is involved in three pending criminal cases. "We are disappointed to learn of the incident today involving Aldon Smith," 49ers general manager Trent Baalke said in a statement. "As this is a pending legal matter and we are still gathering the pertinent facts, we will have no further comment." A fearsome pass-rushing specialist, Smith took a five-game leave of absence from the 49ers last season to undergo treatment for substance abuse. He rejoined the team Nov. 5. Smith played in a 27-7 home loss to the Indianapolis Colts on Sept. 22, two days after he was arrested and jailed on suspicion of DUI and marijuana possession. After the game, he publicly apologized for his behaviour and later announced he would leave for treatment. Leading up to the playoffs in early January, Smith said during an interview with The Associated Press he was encouraged by the strides he had made to better himself off the football field that put life — and his work — in perspective. He said at the time he hadnt had any alcohol since before his Sept. 20 DUI arrest, and that he wasnt craving it. When he rejoined the team Nov. 5, he insisted he was on the path to lifelong sobriety stuck by that statement. His teammates rallied around him in support of his rehab and, later, his return to the team. Smith emerged as one of the NFLs most-feared pass rushers in 2012. He had a franchise-record 19.5 sacks that year, but failed to record a sack in his final six games including the teams post-season Super Bowl run. Smith finished with 8 1/2 sacks and 34 tackles in 11 games last season, making eight starts. In November, Smith pleaded not guilty to three felony counts of illegal possession of an assault weapon, stemming from a June 2012 party at his home. Investigators say several shots were fired, two partygoers were injured and Smith was stabbed. In the subsequent investigation, prosecutors say detectives found five unregistered weapons in Smiths house, including two Bushmaster rifles and an Armalite AR-10T. They say those are assault weapons illegal to possess under California law. Smith and former teammate Delanie Walker were named in a lawsuit last September filed in Santa Clara County Superior Court by a Northern California man who said he was shot at a party at Smiths house on June 29, 2012. The players charged a $10 admission and $5 per drink, the lawsuit said. Smith and now-Tennessee Titans tight end Walker were allegedly intoxicated on Smiths balcony when they fired gunshots in the air while trying to end the party, the lawsuit said. Smith, selected seventh overall in the 2011 draft out of Missouri, had previously been arrested on suspicion of DUI in January 2012 in Miami shortly after the 49ers lost in the NFC championship game. This is the latest in a long list of legal issues for 49ers players the past two years — and recently, too. The Niners, who lost to the rival and eventual champion Seattle Seahawks in the NFC championship game, have made nearly as much news away from the field as they have in free agency this off-season. On Thursday, 49ers quarterback Colin Kaepernick was one of three NFL players named in a Miami police report involving a woman who passed out in a hotel and later woke up in a hospital not knowing how she got there, though no one has been charged with a crime. Kaepernick, 49ers wide receiver Quinton Patton and Seahawks wide receiver Ricardo Lockette — a former 49er — were with the woman at a Miami hotel where Lockette lives, according to the Miami Police Department report. The police say its too early to determine whether a crime was committed. Late last month in San Jose, 49ers cornerback Chris Culliver was arrested on suspicion of felony hit and run and reckless driving after he drove a car into a bicyclist and fled. He is the player who underwent sensitivity training after his anti-gay remarks leading up to the Super Bowl after the 2012 season. He has done outreach to the lesbian, gay, bisexual and transgender community. Last summer, another starting linebacker, Ahmad Brooks, was investigated by the Santa Clara County District Attorneys office on allegations that Brooks repeatedly hit a teammate on the head with a beer bottle. No assault charges were filed because of insufficient evidence. According to police, Brooks hit then-teammate Lamar Divens with the bottle three times and then punched him in the face during an early morning argument June 8. Divens sustained a 3-inch cut on his forehead. Another member of the defence, Demarcus Dobbs, was suspended for Week 1 last season for his own arrest on suspicion of DUI and marijuana possession in 2012. AP Sports Writers Janie McCauley and Josh Dubow in San Francisco contributed to this report. Zane Gonzalez Jersey . Formula One Teams Association secretary general Oliver Weingarten says the organization collapsed over unpaid subscription fees and a failure to strike an agreement for 2014 with all 11 teams. Austin Corbett Jersey . Now, the hottest team on the ATP are pointing their sights on qualifying for the eight-team season finals in London next November. Pospisil has now established the year-end World Tour Finals as the benchmark for a breakthrough season, with Pospisil and Sock provisionally standing ninth. http://www.brownsrookiestore.com/Browns-Ej-Gaines-Jersey/. With his father watching from the stands, Harrison homered, doubled, single and drove in a career-high five runs to lead the Pirates to a 8-3 win over the Milwaukee Brewers on Friday. Zane Gonzalez Browns Jersey . Irving played 10 minutes Sunday night before going to the locker room. He had two points and four assists, missing all five of his shots. The All-Star game MVP is the top scorer among Eastern Conference point guards with 21. Jarvis Landry Jersey . The Spanish champions decision not to sign a defender during the January transfer window may have backfired after Valencia took advantage of a lethargic, uninspired effort by its hosts at the Camp Nou, where former Spain coach Luis Aragones -- who previously coached the Catalan side -- was honoured after his death on Saturday.Sacramento, CA (SportsNetwork.com) - Ty Lawson scored 14 of his 22 points during a dominant third quarter, leading the Denver Nuggets to a 118-108 victory over the Sacramento Kings on Friday night. 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