SAN FRANCISCO (CBS SF) — Fire crews in San Francisco contained a three-alarm on the 4200 block of 23rd Street in the Noe Valley neighborhood that damaged four homes early Wednesday morning and left a firefighter with minor injuries.

The San Francisco Fire Department’s media Twitter account posted about the fire at about 2:12 a.m. The Citizen App page for the incident said the fire in the garage of a home was reported shortly before 2 a.m.

Fire department officials said that there was a live wire involved at the scene. By 2:19 a.m. a third alarm had been called and the fire had spread to the roof and two other single-family homes.

Fire personnel said an initial search of the structure indicated that no one was trapped in the home. So far there were no reports of injuries.

As of about 2:45 a.m., firefighters on scene reported that the fire was contained and was no longer spreading.

After initially saying that the fire had damaged three homes, the fire department provided a later update that four homes were damaged and six adults displaced by the fire. The update also noted that one firefighter suffered from a minor injury and was reportedly treated for exhaustion.