St. Paul police have announced the year’s 21st homicide, which they said involved a woman in the Highland Park neighborhood early Sunday morning.

Police were called to an apartment on the 900 block of St. Paul Avenue at about 2 a.m., according to a police statement.

Upon arrival at the residence, officers were met by an adult male at the door.

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They found “a female suffering from obvious injuries” inside, the statement said. Paramedics pronounced the victim dead at the scene.

The man was placed under arrest and taken to police headquarters. The victim and the suspect are known to each other, police said, and no other suspects are being sought.

The incident remains under investigation. The Ramsey County medical examiner’s office will determine the exact cause of death and release the victim’s identity.