Falling debris damaged a Saudi Aramco office building in Riyadh on Sunday after authorities warned of a possible attack on the capital. Saudi Arabia’s Energy Ministry said the building sustained limited damage and reported no injuries or deaths.

The ministry said someone attempted to strike the building and that debris fell on it. Its statement gave no details about who targeted the office or which projectile produced the debris. Saudi authorities reported intercepting missiles headed toward Riyadh, and the Saudi-led military coalition attributed the launches to Yemen’s Houthis.

Saudi Civil Defense lifted its alerts for Riyadh and Najran after the immediate danger passed, Gulf News reported. Civil Defense urged people to continue following official instructions and stay clear of the affected sites. The damage was reported in Riyadh’s King Abdullah Financial District.

What Americans in Saudi Arabia should know

The U.S. State Department travel advisory, issued Oct. 23, advises Americans to reconsider travel to Saudi Arabia and warns of missile and drone threats. It advises against travel to the Yemen border and tells U.S. citizens to avoid photographing or sharing information about missile and drone interceptions or impact sites. U.S. government employees working in the kingdom need special authorization to use Saudi airports.

Travelers flying through Riyadh can check their airline’s flight status before heading to the airport. The ministry’s bulletin concerned the office building in the financial district and did not announce any change to flight operations.