Turkey detains 48 suspected Islamic State members: Anadolu

Police raided six addresses in three districts of Istanbul, and detained 31 foreign nationals, Anadolu said.

Officers seized digital material and documents during the operation, Anadolu said.

Seventeen more who were also preparing to launch an attack were detained in raids across the capital Ankara, Anadolu said.

It did not give details on when the operations were carried out.

Turkey has been a partner in the US-led coalition against Islamic State fighters.

Turkish police stepped up operations against Islamic State suspects at the end of last year before the first anniversary of a New Year gun attack on a nightclub in Istanbul in which 39 people were killed.

Islamic State claimed responsibility for that shooting, one of a series of attacks believed to have been carried out by the jihadists in Turkey in recent years.