Ukrainian servicemen stand guard on a street near the burning building after a shelling by pro-Russian rebels of a residential sector in Mariupol, eastern Ukraine. Reuters

 AFP

At least 20 people died Saturday when rockets hit Ukraine's strategic government-held port of Mariupol in the wake of Russian-backed rebels' rejection of peace talks, Ukraine's interior minister said.

The eastern Donetsk region police chief said another 86 people were injured in the attack. 

"The morgue has already received 20 bodies, but the number is constantly growing," Vyacheslav Abroskin told a televised emergency response meeting convened by Prime Minister Arseniy Yatsenyuk.