Map: Location of the fires, explosions, gas odors in Lawrence area

Firefighters have been called to dozens of addresses in Lawrence, Andover, and North Andover after a spate of suspected gas fires and explosions. All residents of those areas who have Columbia Gas have been urged to evacuate.

State Police said investigators have carried out at least 70 responses to reports of fires, explosions, and gas odors as of about 7:30 p.m.