Police in Kyoto say the man suspected of a deadly arson attack on an animation studio could have been targeting other facilities belonging to the company, based on security footage from the day before.
The incident took place at Kyoto Animation's number one studio on Thursday, killing 34 people and injuring 34 others.
Police now say 41-year-old Shinji Aoba was seen on Wednesday near the company's headquarters and number two studio, both about one kilometer away from the scene of the attack.
Police say the footage shows Aoba, wearing a red shirt, using a cart to push gasoline containers.
They believe he might have come to scope out the two buildings.
An initial investigation revealed Aoba bought the containers, pushcart and a lighter at a store about five kilometers from the number one studio.
The suspect is being treated at a hospital for serious burns. Police plan to arrest him on suspicion of arson and murder once his condition improves.