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Report: Saudi coalition used US bomb in Yemen market strike

This image released by Human Rights Watch shows remnants of a bomb, found at the scene of a March 15, 2016 airstrike on Mastaba, Yemen. Human Rights Watch said Thursday, April 7, 2016 that their investigators found fragments of a GBU-31 satellite-guided bomb at the site of the market bombing in the northwestern town of Mastaba. The group said the bomb, as well as its guidance equipment, is made by the U.S. (Human Rights Watch via AP)

This image released by Human Rights Watch shows remnants of a bomb, found at the scene of a March 15, 2016 airstrike on Mastaba, Yemen. Human Rights Watch said Thursday, April 7, 2016 that their investigators found fragments of a GBU-31 satellite-guided bomb at the site of the market bombing in the northwestern town of Mastaba. The group said the bomb, as well as its guidance equipment, is made by the U.S. (Human Rights Watch via AP)  (The Associated Press)

A human rights group says a Saudi-led coalition battling Shiite rebels and their allies in Yemen used a U.S.-supplied bomb in a strike on a market last month that killed at least 119 people.

Human Rights Watch said Thursday that their investigators found fragments of a GBU-31 satellite-guided bomb at the site of the market bombing in northwestern town of Mastaba. The group said the bomb, as well as its guidance equipment, was supplied by the U.S.

American officials could not be immediately reached for comment, though U.S. Secretary of State John Kerry was in Bahrain on Thursday.

The Saudi-led coalition has been conducting airstrikes and battling the Shiite rebels known as Houthis since March 2015. Mastaba is a Houthi-held town. Saudi officials have said they are investigating the strike.