<p>Russian forces launched a series of overnight strikes that have knocked out power supplies in parts of Kharkiv, Ukraine's second city, local officials said on Friday.</p>.<p>There was no word on casualties.</p>.<p>"The occupiers hit critical infrastructure. There were about 10 explosions," Kharkiv governor Oleh Synehubov said on Telegram. "In some regions, there are power cuts. Emergency services are on site."</p>.<p>Kharkiv Mayor Ihor Terekhov said the 4 a.m. strikes could disrupt power, heating and water supplies. </p>
<p>Russian forces launched a series of overnight strikes that have knocked out power supplies in parts of Kharkiv, Ukraine's second city, local officials said on Friday.</p>.<p>There was no word on casualties.</p>.<p>"The occupiers hit critical infrastructure. There were about 10 explosions," Kharkiv governor Oleh Synehubov said on Telegram. "In some regions, there are power cuts. Emergency services are on site."</p>.<p>Kharkiv Mayor Ihor Terekhov said the 4 a.m. strikes could disrupt power, heating and water supplies. </p>