Kiev, Ukraine (CNN) Russian military forces and equipment have entered Ukraine, Prime Minister Arseniy Yatsenyuk says, according to a report from Ukraine's state-run media on Monday.

"I have just spoken with the national defense and security council secretary. Ukrainian military intelligence confirm the fact military personnel and equipment have been transferred from Russia to Ukraine," the prime minister is quoted as saying.

He continued: "Tanks, GRAD multiple rocket systems, BUK and SMERCH systems, radio electronic intelligence systems are not sold at local Donetsk street markets. Only the Russian army and Defense Ministry have them."

The prime minister's spokeswoman, Olga Lappo, confirmed to CNN the quotes attributed to Yatsenyuk are accurate.

Russian officials could not be immediately reached for a response.

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