One person was killed and 37 others injured in an explosion at a nightclub in Azerbaijan's capital early Sunday, the prosecutor general said.
"One person, a 43-year-old employee was killed," the prosecutor general was quoted as saying by the Russian news agency RIA Novosti.
"Thirty-seven others were injured, of whom four are in a serious condition," the statement said.
RIA Novosti quoted medical sources as saying that an Italian and a Senegalese citizen were among the casualties.
The blast, which occurred at 3:00 am (2300 GMT), was caused by a leak from a tank of liquefied gas stored in the nightclub, according to the national gas utility, Azerigas.
A fire caused by the explosion has been extinguished and the search and rescue operation completed, the Ministry of Emergency Situations said.