KYIV, Ukraine >> Russian forces struck a residential building in Ukraine’s second-largest city of Kharkiv on Thursday, killing two, including a 12-year-old boy, and injuring scores of others, and launched scores of other attacks as they continued their grinding onslaught in the country’s east.

Regional head Oleh Syniehubov said the boy was fatally injured when the building was hit by a Russian 500-kilogram (1,100-pound) glide bomb.

“He was freed from under the rubble with severe head injuries and fractures,” Syniehubov wrote on social media. “Doctors performed resuscitation measures for more than half an hour..”

Syniehubov said later that rescuers also retrieved the body of an unidentified man from the debris.

Interior Minister Ihor Klymenko said at least 35 people were injured in the attack and others could still be trapped under the rubble, including a missing 15-year-old boy.

Russia has increasingly used powerful glide bombs to pummel Ukrainian positions along the 600-mile line of contact and strike cities dozens of kilometers from the front line. Kharkiv, a city of 1.1 million, is located less than 20 miles from the border.

President Volodymyr Zelenskyy has repeatedly urged the United States to allow Ukraine to use long-range American missiles to strike air bases deeper in Russia that are used by aicraft carrying glide bombs. Washington so far has only allowed some strikes close to the border.

Zelenskyy repeated his request Thursday, publishing a video showing the ravaged building

“Partners see what is happening every day,” Zelenskyy wrote on Telegram. “And under these conditions, each of their delayed decisions means at least dozens, if not hundreds of such Russian bombs against Ukraine.”