Man dies after detonating grenade in Moscow

A man died after pulling the pin on a grenade and blowing himself up at the entrance of a discount retail store in northeast Moscow, news agency Interfax reported on Saturday, citing a law enforcement source.

No other injuries were immediately reported.

The man drove up to the store and parked his silver all-terrain vehicle before approaching the entrance, the law enforcement source said, quoting witnesses.

"He muttered something incomprehensible, took a grenade out, pulled the pin and an explosion followed," he said.

The man died on the spot. His motives were unclear.