Updated

Authorities arrested the husband of a slain suburban Milwaukee police officer who was shot dead on Christmas Eve while out on patrol.

Ben Gabriel Sebena, of Menomonee Falls, was booked into Milwaukee County Jail on Wednesday on a preliminary charge of first-degree intentional homicide in the death of his wife, Jennifer Sebena, the Wauwatosa police department said.

It wasn't immediately clear if Ben Sebena had a lawyer. Kent Lovern, an assistant district attorney, said he didn't know if anyone was representing Sebena yet or whether Sebena would be formally charged later Thursday.

Authorities have released few details about Jennifer Sebena's killing, but said the Wauwatosa police officer was patrolling alone on the night she was killed. Officers found her body early Monday after she failed to respond to radio calls. She had been shot several times.