Amazon said drones attacked three of its data centers in the Middle East, causing outages associated with “ongoing conflict in the Middle East.”

Drones directly hit two Amazon Web Services facilities in the United Arab Emirates, and a drone strike near Amazon’s data center in Bahrain also damaged that facility, the company said in publish on Monday on the AWS Health Dashboard.

“These surges caused structural damage, disrupted power delivery to our infrastructure, and in some cases required fire suppression activities that resulted in additional water damage,” AWS said.

Operations in the Middle East remain “significantly impaired,” AWS said, noting that “customers are experiencing increased error rates and reduced service availability.”

Amazon said it was working to restore services and repair physical damage to its facilities, while warning that the “widespread operational environment in the Middle East remains unpredictable.”

The company encouraged its customers in the Middle East to back up their data and consider migrating workloads to servers in other regions.

Amazon shares fell $3.40, or 1.6%, to $204.99 in early trading.