AP source: Man arrested in massive Los Angeles blaze that burned unfinished apartment building

FILE - In this early Monday, Dec. 8, 2014, file photo, Los Angeles firefighters battle a fire at an apartment building under construction next to the Harbor Freeway (Interstate 110) Freeway in Los Angeles. The fire gutted the 1.3 million-square-foot Da Vinci complex. A law enforcement official says a man has been arrested for allegedly causing a massive inferno that destroyed an unfinished apartment building and damaged adjacent office towers in downtown Los Angeles. Damage was estimated at $20 million to $30 million. No one was hurt. (AP Photo/Damian Dovarganes, File) (The Associated Press)

FILE - In this Dec. 8, 2014, file photo, Los Angeles firefighters battle a fire in the seven-story Da Vinci apartment complex under construction in downtown Los Angeles. A law enforcement official says a man has been arrested for allegedly causing a massive inferno that destroyed an unfinished apartment building and damaged adjacent office towers in downtown Los Angeles. Damage was estimated at $20 million to $30 million. No one was hurt. (AP Photo/Damian Dovarganes, File) (The Associated Press)

FILE - In this Dec. 10, 2014, file photo, Los Angeles Fire Department arson investigator Frank Oglesby, second from left, stands with his accelerant detection dog, Major, prior to a news conference in downtown Los Angeles. A law enforcement official says a man has been arrested for allegedly causing a massive inferno that destroyed an unfinished apartment building and damaged adjacent office towers in downtown Los Angeles. Damage was estimated at $20 million to $30 million. No one was hurt. (AP Photo/Richard Vogel, File) (The Associated Press)