SAN FRANCISCO (KRON) — A suspected San Francisco arsonist was arrested this week in the Richmond District following a series of playground fires. On May 26, officers wearing plainclothes patrolled a neighborhood where several recent suspicious fire had been ignited.
That afternoon, patrol officers saw a 29-year-old man, Joseph Martinez, igniting objects in a park around La Playa and Balboa streets. “Officers later observed a large active working fire,” the San Francisco Police Department wrote.
While firefighters extinguished the big blaze, police officers found Martinez nearby and arrested him…