Apartment Building, Residential Lynn, MA – Couch fire in fourth floor apartment extinguished by sprinkler system April 16, 2016 viking210 The Lynn Fire Department responded to a couch fire in a fourth floor apartment at 501 Washington St. Tuesday, said Lynn District Fire Chief Stephen Archer. The fire, which occurred at 4 p.m., was extinguished by a sprinkler system. Residents of that unit have had to find a new home due to water damage, Archer said. The cause of the fire is under investigation.