The FBI is investigating cyber-attacks over the weekend on several western websites allegedly by someone with links to ISIL terror group

The FBI is investigating cyber-attacks over the weekend on several western websites allegedly by someone with links to ISIL terror group.

The websites that were hacked include that of the Dublin Rape Crisis Centre in Ireland, the Southwest Montana Community Federal Credit Union, Third Street Brewhouse, and the Montauk Manor.

The hacked websites carried a picture of the black ISIL flag and the words "hacked by ISIL, we are everywhere."

Southwest Montana Community Federal Credit Union and Montauk Manor have removed the ISIL banner, while Third Street Brewhouse's website "is currently undergoing scheduled maintenance," and will take more than two days to come online.

No accounts at the credit union have been compromised in the attack.

ISIL is said to have hacked hundreds of websites in the US and Europe on 6 and 7 March. "The FBI is aware of the reported incidents and is contacting the impacted parties," the agency said.