"The risk involved here - a moving bus - is just incredible," said Anne Drennan, spokeswoman for the Transit Police.
The bus was carrying about 40 passengers at the time, she
Its driver pulled over after hearing breaking glass, to find the bus had been struck four times; on the front windshield, front glass door, a large passenger window and the rear door.
Glass splinters were sprayed over some seats but none of the passengers were cut.
It happened at 12:11 a.m., at King George Boulevard and Fraser Highway.
said police believe the shots came from the south side of Fraser Highway, in the 13800-block, from a high-powered BB gun that's likely semi-automatic "because the shots were fired so quickly."
"We have no idea who did this or what the motive is," Drennan
"It's a very rare occurrence.