A domestic violence suspect bit two deputies during a fight early Monday, leaving one of the deputies with a severed finger, according to the Washington County Sheriff's Office.

Deputies were called to an Aloha-area apartment complex on a report that Erik Rodriguez-Reyes was assaulting his pregnant girlfriend, the agency said in a news release. Rodriguez-Reyes and his father were later arrested. The girlfriend suffered minor injuries.

Several people were "uncooperative" when deputies showed up, and "started a physical confrontation" with the responders, according to the sheriff's office. Rodriguez-Reyes bit two deputies during a fight, severing the tip of one of the deputies' index fingers, the agency said.

The injured deputy, who wasn't publicly identified, was taken to a hospital for treatment.

"He lost the tip of an index finger, has been released from the hospital, and is at home resting," the sheriff's office tweeted later Monday morning.

Deputies said Rodriguez-Reyes was arrested on suspicion of second-degree assault, two counts of assaulting a public safety officer, coercion, second-degree kidnapping, five counts of aggravated harassment, resisting arrest, and harassment.

His father, 42-year-old Francisco Rodriguez-Estrada, was arrested on suspicion of three counts of harassment and single counts of interfering with a peace officer and resisting arrest, according to the sheriff's office.

Rodriguez-Reyes, 24, was shown on the Washington County Jail roster around 8:30 a.m. His father was booked and released on his own recognizance.

The fight unfolded at the Belleau Woods apartment complex. Deputies initially responded there shortly after 2:45 a.m.

-- Jim Ryan

jryan@oregonian.com

503-221-8005; @Jimryan015