Updated at 10:30 a.m. Jan. 7, 2015

A fire erupted inside one of the second-floor rooms of a historic Oceanside hotel early Wednesday, injuring two people, authorities said.

The fire at the Dolphin Hotel at 133 South Coast Highway was reported about 5 a.m., according to Oceanside Fire Department Battalion Chief Terry Collis, who said the cause was under investigation.

Crews had the flames knocked down about 25 minutes later, he said, adding 15 people were displaced and damage was estimated at about $100,000.

One injured person was treated and released at the scene and another was flown to the UCSD Burn Center for treatment of burns to his feet and hands, Collis said.

The Dolphin Hotel opened in the 1920s.

— City News Service

Chris Jennewein is Editor & Publisher of Times of San Diego.