PORTLAND, Ore. – The suspect who allegedly ran from police and was injured by a small explosion in his vehicle in Washington County appeared in court for the first time since the blast.

The driver, 26-year-old Jason P. Schaefer, appeared Oct. 16 for a probation violation. He was released from the hospital and booked into the Washington County Jail after the incident in Rock Creek.

FBI spokeswoman Beth Anne Steele said the bureau and other agencies began serving a federal search warrant related to possible explosives inside an apartment at 18840 NW Rock Creek Circle on the morning of Oct. 11.

Just before 4 p.m., authorities attempted to stop a driver, believed to be Schaefer, near 185th Avenue and Rock Creek Boulevard. The driver did not stop, but a pursuit ended quickly, Steele said.

As a Washington County sheriff's deputy approached the vehicle, a small explosion occurred. Schaefer got out of the vehicle, but was quickly taken into custody.

The blast damaged Schaefer's left hand and fingers, officials said.

The sheriff's deputy and Schaefer were taken to a hospital. The deputy has since been released.

Court records say Schaefer pleaded guilty in May to being a felon in possession of body armor. He was sentenced to 18 months of federal probation in Washington County.

The FBI in September learned that Schaefer had purchased hexamine, which can be used to make a chemical used in homemade explosives for suicide bombings. Schaefer also purchased remotes intended to set off fireworks from a distance, and more than 100 electric matches, court documents said. Investigators determined Schaefer's apartment had explosives that could be detonated remotely.

Explosion in a vehicle in Rock Creek

On Oct. 10, a federal judge approved a search warrant for Schaefer's apartment, and Schaefer was called to the probation department to be interviewed by special agents. He stormed out of the interview, court documents said, and his whereabouts were unknown until the following day.

Schaefer's felony conviction was related to an assault in New York. He had no previous arrest history in Oregon.