Father talks about son's death in Ukraine coking factory

A factory that once produced 12,000 tonnes of coke per day has been hit 165 times since the start of the Ukraine conflict.

In February 25-year-old Sergei Kruglenko had just arrived at work with his father Viktor when a shell hit. Sergei, who has two young children, was killed by the blast.

Viktor spoke to the BBC's Tom Burridge about what happened.