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MUMBAI, May 5 (Reuters) - At least seven people were killed and several others were feared buried under rubble after a powerful explosion at a chemicals factory in western India on Saturday, police said.

The blast destroyed the three-storey factory building, which produced ammonium nitrate used in explosives, near Nashik town in the state of Maharashtra at about 1 a.m. local time.

"We are removing body parts and we fear some more people could still be under the rubble," said police officer S.M. Kadam.

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