49ers’ Aldon Smith posts bail after alleged LAX bomb threat comment

San Francisco 49ers linebacker Aldon Smith was out on bail Monday following his arrest at Los Angeles International Airport, where police alleged he became argumentative with a screening agent and made comments suggesting he had a bomb.

Online jail records showed Aldon Jacarus Ramon Smith, 24, was released from custody shortly after 7 p.m. Sunday on $20,000 bail.

Smith after he was randomly selected for a secondary screening about 2 p.m. at Terminal 1 and “became belligerent and uncooperative with the process,” said airport police Sgt. Karla Ortiz.

Smith then made a comment to the Transportation Security Administration agent “indicating he was in possession of a bomb before proceeding towards the gate area,” Ortiz said.

Airport police later caught up with Smith at the gate, where he became uncooperative with police and was then detained, Ortiz said.

He was booked at the Los Angeles Police Department’s Pacific Division on suspicion of making a false report of a bomb threat.

This wasn’t Smith’s first run-in with the law.

He spent some time off the playing field after he was arrested in September on suspicion of driving under the influence and possessing marijuana. And in October, Smith was charged with three felony counts of illegal possession of assault rifles stemming from a raucous party at his San Jose home in June 2012.

Smith has been a key player in the 49ers defense, and set a team record with 19 1/2 sacks during the 2012 season.

In a statement, 49ers General Manager Trent Baalke said, “We are disappointed to learn of the incident today involving Aldon Smith.”

The Los Angeles County District Attorney’s office said Monday morning that his court date had not yet been scheduled.

Times staff writer Sam Farmer contributed to this report.

ron.lin@latimes.com

Twitter: @ronlin | Facebook | Google+