Turkish police detained 20 people, including 10 serving military officers, on Thursday in connection with an investigation into an alleged plot to topple the government, a Turk television said.
The arrests were made in five provinces around the country and followed the discovery in April of a cache of weapons outside of Istanbul, CNN Turk said.
The latest arrests are part of a probe into an ultra-nationalist group known as Ergenekon, accused of planning bomb attacks and assassinations to foment social unrest and destabilise Prime Minister Tayyip Erdogan's government.
About 140 people are already on trial in the case, including retired military officers, lawyers and journalists.
The 10 officers who were arrested on Thursday work at Ankara's military hospital, and anti-terrorism police were searching the homes of some of them, CNN Turk said. Two civilians who work at a military facility were also detained.
Police investigating the Ergenekon network last month raided the offices of Saylan's education association. Several members were detained, and Saylan was questioned in the probe. She founded the Association for Supporting Contemporary Life in 1989.
Güncelleme Tarihi: 05 Haziran 2009, 09:13