(Reuters) - A magnitude 6.6 earthquake struck off the coast of Buala, Solomon Islands on Friday, the U.S. Geological Survey (USGS) said.

       The quake was at a depth of 33 km (20.51 miles), and was about 155 km west-southwest of Buala, the USGS said.

       (Reporting by Jahnavi Nidumolu in Bengaluru; Editing by Jacqueline Wong)