A car caught on fire in a TriMet park-and-ride lot in Tigard on Tuesday, injuring one person and damaging a total of five vehicles, authorities say.

Witnesses reported explosions and one car engulfed in flames about 2:15 p.m. near Southwest Pacific Highway and 74th Avenue, said Alisa Cour, a Tualatin Valley Fire & Rescue spokeswoman.

A man was found injured in the area and was taken to the Oregon Burn Center at Legacy Emanuel Medical Center for treatment, according to Cour. Two vehicles were destroyed and three others had fire-related damages.

No one else was injured. The cause of the fire is under by Tualatin Valley Fire & Rescue, according to Sgt. Tom Duncan, a Tigard police spokesman. Investigators are still trying to determine if the source of the blaze was suspicious, he said.

The injured man's condition and identity have not been released.

-- Everton Bailey Jr.