JAKARTA, May 13 (Reuters) - Suicide bombers struck three churches in Indonesia's Surabaya city killing at least two people, police said on Sunday.

"The victims are being identified," said Frans Barung Mangera, East Java police spokesman.

Surabaya is Indonesia's second-largest city.

(Reporting by Agustinus Beo Da Costa; Writing by Kanupriya Kapoor; Editing by Simon Cameron-Moore)