An explosion at an Istanbul apartment building today killed two people and injured six others.
A police official said the two men who were killed were believed to be members of the Kurdistan Workers' Party, or PKK, adding that police were looking to confirm their identities.
Police suspect the explosion was a deadly mishap as Kurdish rebels attempted to mix bomb-making materials for a future attack.
The blast blew out windows in the five-storey apartment building and injured six other people as it threw glass and debris onto the street below.
Police said the explosion happened as something was being manufactured inside the apartment but gave no further details.
The separatist PKK - which is considered a terrorist group by Turkey, the United States and the European Union - has increased its attacks in Turkey recently. The group has carried out numerous deadly bombings in Turkey since it took up arms in 1984.
AP