A Multnomah County grand jury Wednesday cleared a Portland police officer of criminal wrongdoing after he shot and killed a man at a Northeast Portland Motel 6 in June.

Curtis Brown, an 18-year veteran of the Portland Police Bureau, shot and killed 40-year-old Michael Ray Townsend on Thursday, June 24.

Police were called to the motel on Northeast Holladay Street, about a block away from the Oregon Convention Center, just after 7 p.m. that day for a welfare check.

Motel surveillance video released by the bureau showed Townsend advancing toward Brown, lunging at him with a screwdriver that had been modified in some way.

According to the Multnomah County District Attorney's Office, Townsend had consumed a large amount of methamphetamine and wanted to go to the hospital or return to his motel room.

Another police officer with Brown told Townsend they would need to pat him down before they could take him to the hospital. The DA's office said Townsend then reached toward his pocket and indicated he didn't want to be patted down. He then pulled the modified screwdriver out of his pocket, began threatening Brown and moving toward him.

According to the DA's office, Brown ordered Townsend to drop the screwdriver, but he didn't and kept moving toward Brown. Brown then shot him twice. Townsend died on the way to the hospital.

After the shooting, a crowd of protesters grew at the scene throughout that evening and the situation became tense at times between protesters and police.

Police said people in the crowd threw objects and that someone grabbed an officer's baton. Another officer intervened and was sprayed with a chemical, police said.

Officers from around the city responded to the scene to provide security.