(Sports Network) - San Francisco 49ers linebacker Aldon Smith has reportedly been detained by police at Los Angles International Airport, according to the San Jose Mercury News.
Smith, per the paper, was "being uncooperative with security personnel and stating he had a bomb."
The 25-year-old was apparently then transported to booking.
Last year, Smith took a leave absence from the 49ers to seek help for a substance-abuse problem. He left the team just days after a Sept. 20 arrest on suspicion of driving under the influence and possession of marijuana.
In November, Smith pleaded not guilty to three felony counts of illegal possession of an assault weapon on charges stemming from a June 2012 incident.
On the field, Smith has been one of the NFL's premier pass rushers since being taken by San Francisco with the seventh overall pick of the 2011 draft. He notched 14 sacks during his rookie season, then ranked second in the league with 19 1/2 sacks last year while helping the 49ers to an appearance in Super Bowl XLVII. In 11 games last season, the Missouri product totaled 8 1/2 sacks.