As many as five people are currently being treated for injuries after a suspect reportedly opened fire at the YouTube headquarters in San Bruno, California, on Tuesday.

Stanford Health Care, a hospital near the YouTube headquarters, confirmed to ABC News that four to five people were being treated there for injuries related to the shooting, but did not provide information about their conditions.

As CrimeOnline previously reported, the suspected shooter has been described as an adult woman, white, wearing dark clothes and a head scarf.

A witness told KRON4 that he had heard a woman was shot at an unspecified location and crawled to a Carl’s Jr. Another witness told the news station they saw a woman get shot on a patio.

Authorities have not confirmed the identity of the shooter, and it is not clear if the suspect is in custody or at large.

This is a developing story. CrimeOnline will provide further updates when more information becomes available.

[Feature image: YouTube Headquarters/Associated Press]