UPDATE: Fire guts hotel, injured 2 firefighters

SOUTH BRUNSWICK -- A blaze caused "extensive damage" to the Best Western hotel on Route 1 in South Brunswick Sunday night, according to police.

Two firefighters were taken to an area hospital to be treated for heat exhaustion, the South Brunswick police said on the agency's Twitter account. Several area fire departments were at the scene around 9 p.m.

Only one lane was open on Route 1, south of Route 522, police said.

Photos posted on Twitter showed flames shooting from the upper floor of the two-story hotel. It was not immediately clear if the fire had been brought under control as of 9:30 p.m.

Multiple fire companies working on Best Western hotel fire on Rt 1 pic.twitter.com/hThbibUpFJ — So Brunswick PD (@SoBrunswickPD) September 11, 2017