KHARTOUM, Sudan — Sudanese clambered over the walls of the U.S. Embassy compound in Khartoum on Friday in a protest at a film that insults the Prophet Mohammad, and embassy guards fired warning shots, a Reuters witness said.

Protesters hosted an Islamic flag at the U.S. Embassy compound after breaching an outer security wall, the witness said.

One person was left lying in a pool of blood after being struck by a police car and police withdrew from the area shortly after the incident, the witness added.