SAN BRUNO, Calif. -- A Bay Area man suspected of a double-homicide is dead after a standoff with police shut down busy I-380 in San Bruno. The incident came to an end after the man's body was found inside his car -- the apparent victim of a self-inflicted gunshot.

The standoff lasted for about two hours. Authorities say the man crashed his car on Interstate 380 while being pursued by officers. As patrol cars surrounded him on the freeway, police say the man was threatening to harm himself and others.

Westbound 380 from Highway 101 to the El Camino exit in San Bruno remained shut down late into the evening as police continue their investigation into an armed standoff.

Authorities say shortly before 6 p.m. They began pursuing a stolen black range rover from San Mateo. At the I-380 interchange, the SUV hit another car and came to a stop.

Authorities believed the man inside the vehicle was armed. They said he was the suspect in the shooting deaths of two men on Sunday at the Brass Rail Gentlemen's Club in Sunnyvale.

Mathew O'Reilly, 29, was wanted in connection with the shooting deaths of Menlo Park resident Benjamin Osegura, 31, and San Mateo resident Jason Gamino, 29. The two men were seated in a 2006 Range Rover parked in the Brass Rail parking lot when they were shot dead Sunday night at approximately 9:30 p.m.

Sunnyvale police say they were staking out an area in San Mateo looking for O'Reilly when they saw a man matching his description take off in the Range Rover.

During Tuesday night's freeway standoff, police fired tear gas into the car twice and sent a police dog to the car.

"Officers approached the car using an armored vehicle. The suspect was deceased self inflicted gunshot wound," says Sunnyvale police Capt. Doug Moretto.

This whole incident took some two hours before the suspect was declared dead. Sunnyvale police say they have still no motive in the brass rail shootings, but say the suspect and the victims appeared to have known each other and that it was not a random shooting.