A Vancouver man faces arson charges after police said he detonated explosives twice in the past four months at an east Vancouver apartment complex.

The first incident was reported at about 4:30 a.m. on July 29, when police responded to an explosion and fire in the parking lot at the Sir James Apartments, 11022 N.E. 18th St. Police responded and discovered a silver Mercedes station wagon had been damaged by an improvised explosive device, according to a probable cause affidavit filed in the case.

The investigation was suspended without leads until another vehicle was bombed at about 3:40 a.m. on Oct. 2, according to court documents.

No one was injured in either incident, Vancouver police spokeswoman Kim Kapp said.

Arson detectives determined that carbon dioxide cartridge bombs were used in both incidents, the probable cause affidavit states. An extensive investigation led police to Pedro Franco-Gonzalez, 21, an acquaintance of the woman whose vehicle was targeted in the Oct. 2 incident, court records state.