MOSCOW (AP) — Russia has resumed sharing data from radiation monitoring stations in Siberia after some were taken offline following a deadly explosion at a missile range, a nuclear weapons watchdog said Tuesday, while an American expert said the fact that more than one Russian site went offline at the same time suggests it was not the work of Mother Nature.

The Comprehensive Nuclear Test Ban Treaty Organization (CNTBTO) said earlier this week that several Russian radiation monitoring stations went silent shortly after the Aug. 8 explosion at the Russian navy’s testing range in northwestern Russia.

Lassina Zebro, the organization’s executive secretary, said Tuesday on Twitter that the two Russian stations reported to be offline are back in operation and are now backfilling the data. He lauded Moscow for its “excellent cooperation.”

William Tobey, a former deputy administrator at the U.S. National Nuclear Security Administration, said it was “at least an odd coincidence” that the Russian sensors stopped transmitting data about the same time as the explosion occurred.

Read full article.