Three tents burned down in the migrant reception and identification center of Moria, on the island of Lesvos, on Friday but no injuries were reported, according to state-run news agency ANA.
The fire is believed to have started from a short-circuit and was put out quickly, the report said.
This is the third blaze in the overcrowded camp in a month, starting with March 16, when a seven-year-old girl died.
Also on Friday, a large number of asylum seekers staged a protest by the entrance of the center, calling for the arrest of an Afghan man, aged 20, who stabbed and killed a 16-year-old fellow compatriot outside the camp on Wednesday.
The alleged perpetrator has been identified and the police is looking for him.