OAKLAND (KRON) — A man is in critical condition Thursday morning after being injured in an apparent pistol-whipping in Oakland.

At around 1:15 a.m., a male victim was found assaulted in the 9700 block of Birch Street near 98th Avenue in East Oakland, according to police.

The victim was taken to a hospital with a critical brain injury.

Police have not made any arrests and did not provide a suspect description.

Oakland homicide detectives are investigating. Anyone with information about it has been asked to contact the Oakland police homicide section at (510) 238-3821 or the department’s tip line at (510) 238-7950.