A fire has been reported at a former nuclear research center in the Russian capital, Moscow.
Officials of the Emergency Situations Ministry said there were no open flames and no threat of a radiation leak from the non-operational, 60-year-old reactor housed at the institute.
No casualties were reported.
State-run ITAR-TASS quoted an unnamed source at the institute who said by late afternoon the fire had been extinguished.
The environmental group Greenpeace Russia expressed serious concern about the incident.
Compiled from agency reports