Man detained in California arson probe NEW: There have been 55 "fires of concern" since Friday, authorities say A man is detained for questioning A video released by authorities showed a man allegedly tied to at least two fires A search was conducted at a residence Los Angeles (CNN) -- Authorities have detained a man for questioning in connection with a suspected arson spree in the Los Angeles area, officials said Monday. It was not immediately clear whether it's the same man seen in a surveillance video released by authorities. Fifty-five "fires of concern" have broken out in the Los Angeles area since Friday, the city fire department said. Those include 45 in the Los Angeles area, nine in West Hollywood, and one in Burbank. Several came in the early hours Monday. The video released by authorities showed a man who appears to be in his late 20s to mid-30s and has a ponytail, receding hairline and dark hair. CNN saw a man with a ponytail detained in a sheriff's department vehicle near the location of several fires. Capt. Brian Dameron of the fire department said the man was arrested near Sunset Boulevard and Fairfax Avenue. Michael Moriarty, a commander in the Los Angeles Police Department's detectives bureau, said authorities have video of a man in two instances directly tied to recent fires. Authorities have not announced whether the man arrested is the man in the video. The arrest came after a series of new blazes erupted overnight, very early Monday, after authorities released the video. Cars were set on fire in Hollywood and Van Nuys, Capt. Jaime Moore of the Los Angeles Fire Department said early Monday. Los Angeles has not seen such a rash of fires since the city's riots in 1992. City councilman Tom LaBonge described the fires as the work of an arsonist who struck "like lightning." A joint task force that includes city and county fire and police department officials is investigating the string of fires. There is a $60,000 reward in the case. Police were asking residents in the area to bring forward any surveillance video from their properties that might show suspicious activity. "We're not going to rest and we're going to put all the resources out there," Assistant Fire Chief Patrick Butler said.