Ukrainian drone attacks inside Russia have been growing in intensity in recent weeks, and the New York Times reported that U.S. intelligence believes Ukraine was behind a drone attack on the Kremlin earlier this month.
Ukraine has not publicly acknowledged launching attacks against targets inside Russia. The Ukrainian defence ministry did not immediately respond to a request for comment on Saturday.
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In the Tver region, which lies just northwest of Moscow, two drones attacked a station that serves the Druzhba (Friendship) pipeline, one of the world's largest oil pipelines, the Kommersant newspaper said.
The Tver local council said that a drone had crashed near the village of Erokhino, around 500 km (310 miles) from the border with Ukraine.