Several Amazon data centres in the United Arab Emirates and Bahrain hit by drone strikes in March cannot be reactivated, the company’s cloud arm says, AFP reports.

Amazon Web Services (AWS) said it was unable to restart several sites in Bahrain and one in the UAE. AWS has three sites in Bahrain, according to its website.

“After a thorough assessment, we have determined that we are unable to restore access to the resources and data hosted exclusively in this region,” it said in a status update.

AWS said in early March that drone strikes damaged two of its data centres in the UAE and a facility in Bahrain.

AWS said that it was still working to restore its “resources” at two sites in the UAE.

“Since the disruption began in March, most customers have been able to re-establish their operations in other regions by restoring backups or copying data that remained accessible,” AWS said, referring to its infrastructure in the UAE.

In the case of Bahrain, the company said it had “exhausted every option for restoring data and resources that had not been migrated before the region became unavailable.”