"A special investigating team on September 3 arrested 33-year-old Sajjan Kumar, a resident of Tamil Nadu, for his involvement in church attacks here," City Police Commissioner Raghavendra Auradkar told reporters here.
Police suspect Kumar owes allegiance to a fundamentalist organisation. "We are investigating it," he added.
Kumar is alleged to have attacked and damaged four churches situated at Yedavanahalli and Huskurgate in city limits, Auradkar said.
Tamil Nadu Police have also filed a case against Kumar for allegedly setting on fire a scooter parked near a hotel where a Christian prayer was held.