(Reuters) - A 5.1 magnitude earthquake struck off Mexico's Pacific coast on Monday, with an epicenter 173 miles west southwest of Cihuatlan, the U.S. Geological Survey reported.

The quake occurred at a depth of 13.2 miles at 10:32 a.m. local time (1732 GMT). There were no immediate reports of damage or injury. No tsunami warning was issued.

The preliminary magnitude of 5.7 had been reported earlier.

(World Desk, Americas)