Over 150 firefighters are fighting to save a San Francisco pier from a four-alarm warehouse fire.

A quarter of Pier 45, the pier at Fisherman’s Wharf, was “lost to the flames,” Lt. Jonathan Baxter, a public information officer with the San Francisco Fire Department, said per CNN. The warehouse was consumed in the fire. The blaze was initially reported at 7:17 a.m. ET and was held back to one part of the pier.