(KRON) -- Fire and police units responded to a structure fire in Redwood City Tuesday afternoon, according to an alert. The Redwood City Police Department and Redwood City Fire Department were both on the scene of the blaze, which is burning in the 300 block of Poplar Avenue. The 3-alarm fire is impacting four different structures on the block, according to the City of Redwood City. Business email hacker stole $500K from victim in San Jose, police say Officials are advising people to avoid the area. There was no immediate word on whether anyone had been injured or displaced. There are several apartment buildings in the area where the fire is burning. Photo: Redwood CityPhoto: Redwood City Video posted to the Citizen app appeared to show a structure with its roof engulfed in flames. Bay City News contributed to this report.