Fire investigators are trying to figure out what caused an engine fire to start under the hood of a truck that went up in flames in Erie Wednesday evening.

The maintenance truck reportedly caught fire while it was driving along E. 38 St. around 5:30 p.m.

The driver noticed the fire, pulled off near 36th and Holland and called 911.

Firefighters found flames coming from the engine compartment, but they were able to quickly put out the flames.

The driver was not injured.