Four tow trucks were set on fire in an hour early Friday morning in York Region, police say.

Two trucks were located in Richmond Hill and another two were in Aurora.

York police Sgt. Andy Pattenden said they received the calls 15 minutes apart from each other and that the fires occurred between 4 a.m. and 5 a.m.

“There’s clearly a connection,” Pattenden said.

The trucks were torched at 64 Wellington St. E. and 145 Wellington St W. in Aurora.

In Richmond Hilll, at 10366 Yonge St. and 16th and Fern Avenues.

Pattenden said the scenes will be held for “quite some time,” as the Ontario Fire Marshal will be on scene Friday to investigate.

There were no injuries.