Police arrested a man Thursday who's suspected of throwing semen on women in Portland-area stores.

Manuel Banuelos-Alcala, a 47-year-old Beaverton man, was arrested in the parking lot of a Safeway store on Southwest Barbur Boulevard on suspicion of third-degree sex abuse, Portland police said in a news release. Detectives learned after his arrest that he "likely" threw semen on another woman Thursday inside the Safeway, police said.

A police spokesman previously said a man, since identified as Banuelos-Alcala, is suspected of such activity at Lamb's Garden Home Marketplace, a Kmart in Beaverton, and Milwaukie and Barbur Boulevard Safeway stores.

Portland police publicized the semen-throwing cases last Friday, and a woman contacted detectives to say she was also a victim of such activity the previous Wednesday at the Barbur Boulevard Safeway, according to police.

Detectives were doing follow-up work at the store, 8145 S.W. Barbur Blvd., Thursday afternoon when they saw someone matching the suspect's description in a parked car, police said. They approached and arrested him without incident.

Police said Banuelos-Alcala could face more charges. Detectives think he may also have thrown semen at other people who didn't realize it, police said.

Police said Banuelos-Alcala would be jailed in Multnomah County. His booking photo wasn't available at 11 p.m. Thursday.

They ask anyone who has information about semen-throwing incidents to contact Detective Chris Traynor at 503-823-0889 or christopher.traynor@portlandoregon.gov.

— Jim Ryan

jryan@oregonian.com

503-221-8005; @Jimryan015