KIRKUK, Iraq (Reuters) – Several rockets were launched into Iraq’s K1 military base near the oil-rich city of Kirkuk on Friday, the Iraqi military said in a statement without elaborating.

The base, which lies 15 km (9 miles) northwest of Kirkuk, houses U.S. military forces alongside Iraqi forces from the Federal Police and Counter-Terrorism Service, security sources said.

It was not immediately clear if there were any casualties. Sources said security forces found a launchpad for Katyusha rockets inside an abandoned vehicle near the base.

Reporting by Mustafa Mahmoud; Writing by Ahmed Aboulenein; Editing by Alison Williams