Russia continues to manufacture cruise missiles despite Western sanctions, experts say.

Some of the cruise missiles that Russia launched at Ukraine’s civilian infrastructure in late November were manufactured months after the West imposed sanctions intended to deprive Moscow of the components needed to make those munitions, according to a weapons research group.

Experts examined remnants of Kh-101 cruise missiles found in Kyiv, the capital, after an attack on Nov. 23 that knocked out electricity and shut down water systems in large areas of the country. One of the missiles was made this summer, and another was completed after September, markings on the weapons show, according to a report released by the investigators on Monday.

That Russia has continued to make advanced guided missiles like the Kh-101 suggests that it has found ways to acquire semiconductors and other matériel despite the sanctions or that it had significant stockpiles of the components before the war began, one of the researchers said.

The findings are among the most recent by Conflict Armament Research, an independent group based in Britain that identifies and tracks weapons and ammunition used in wars. A small team of its researchers arrived in Kyiv just before the attack at the invitation of the Ukrainian security service.