Some residents of Austintown may have heard what sounded like an explosion late Tuesday night. 

It turned out to be two commercial rig trucks that caught fire just before 11 p.m.

It happened on West Webb Road by Route 46. 

One person called the 21 Newsroom and said they heard what sounded like an explosion and their windows shook. 

Fire crews were able to knock the fire out quickly.

Officials said no one was injured.

The cause is under investigation.