Russia has detained a scientist in Siberia on suspicion of state treason for allegedly collaborating with China's security services, the state news agency TASS reported on Friday, citing regional authorities and the man's family.
Dmitry Kolker, a doctor of physics and mathematics at Novosibirsk State University, whose website says he is head of a quantum optical technologies laboratory, was detained on charges of high treason, TASS quoted the Novosibirsk judicial department as saying.
Kolker and the Sovetsky regional court in Novosibirsk, one of Russia's largest cities, situated around 2,800 km (1,750 miles) east of Moscow, did not immediately respond to emailed requests for comment. A lawyer for Kolker could not be reached.