-- An armed passenger who barricaded himself in an Amtrak rail car outside Los Angeles Friday night -- forcing the evacuation of 187 passengers -- was finally apprehended after about eight hours after tear gas was released, police said early Saturday morning.
"Barricaded armed suspect on #AMTRAK train in custody after tear gas deployed. Area safe," tweeted the Los Angeles County Sheriff's Department's Special Enforcement Bureau at 2:19 a.m. local time.
ABC-owned KABC in Los Angeles reported that the weapon was a gun, although police had not yet specified what the weapon was.
According to KABC, witnesses said the suspect appeared to be under the influence, or possibly had a mental health issue.
Train operators were instructed to pull the train into the station in Chatsworth -- located in northwestern San Fernando Valley in Los Angeles County -- and evacuate the train, Montenegro told ABC News.
When deputies arrived, the train was evacuated, with the exception of the car carrying the suspected armed passenger, who locked himself in. KABC reported that the train has also been isolated.
An Amtrak spokesman told ABC News, "Amtrak Train 790 -– the Pacific Surfliner service, operating from San Luis Obispo to San Diego –- is being delayed at the Chatsworth station for police activity. All 187 passengers and 5 crew have safely left the train and remain inside the Chatsworth station."
Amtrak provided buses to take the passengers to a new train elsewhere, but those who went were unable to take their luggage since it remained on the original train
There were no reports of shots fired.
Crisis negotiators and SWAT Team officers were dispatched to the station, Montenegro said.
Train traffic -- including both Amtrak and the regional Metrolink -- was temporarily stopped.
ABC News' Lucien Bruggerman, Anthony McMahon and Shelby Kimball contributed to this report.