An air strike on a residential building in Ukraine’s capital killed at least one person Monday, the country’s emergency service said, as Moscow maintained its devastating assault ahead of a fresh round of talks.

The strike, which injured at least a dozen people, came as Russian troops edged closer to the city and kept up their siege of the southern port city of Mariupol, where officials said nearly 2,200 people have been killed.

“As of 7:40 am (0540 GMT) the body of one person was found dead in a nine-storey apartment building” in the capital’s Obolon district, the emergency service said in a statement, revising an earlier toll.

Ukrainian and Russian representatives were set to meet via videoconference Monday, a Ukrainian presidential adviser and a Kremlin spokesman both said before the latest strike.

According to Ukrainian negotiator David Arakhamia, the talks would begin at 0820 GMT.