Police seek public’s help investigating arson that caused large railroad trestle fire

A fire on a railroad trestle in downtown Salem that prompted a large fire response and threatened an apartment building last month was set intentionally, Salem police said.

In the weeks since the June 16 fire, a police investigation determined the fire was arson, but no one has been arrested yet, police spokesman Officer Mark Jantz said.

“As of now, all potential leads have been exhausted, but we are asking for the public’s help,” Jantz…