U.S. agencies probing 'all potential causes' of attack on internet provider Dyn

WASHINGTON (Reuters) - The U.S. Department of Homeland Security is looking into "all potential causes" of an attack on internet infrastructure provider Dyn that caused widespread disruptions, a spokeswoman for the agency said on Friday.

The FBI is also expected to participate in the investigation into the attack, two other U.S. officials said.

(Reporting by Mark Hosenball; Editing by Tim Ahmann)