A retired general was arrested on Wednesday as part of a probe into the bloodless coup of 1997 that overthrew an Islamist-led government in Turkey, the Anatolia news agency reported.
Izzettin Iyigun, the former chief of ground forces training command, was jailed hours after he was summoned to testify over the February 28, 1997 coup at an Ankara court.
Iyigun was sent to a high-security prison in Ankara's Sincan district, the same place where the army command ordered tanks to roll out onto the streets in a thinly veiled threat to then-prime minister Necmettin Erbakan.
Iyigun is accused of involvement in the chain of command for the incident, which led to Erbakan's resignation a few months later.
The ex-general's arrest pushed the number of generals jailed in the past month for alleged roles in the coup to 10.
Dozens of other military officers were also arrested as part of a probe launched in 2011 and seen as the latest standoff between the Turkish army and Turkey's current Islamist-leaning government.
In September, some 300 active and retired military officers received prison sentences of up to 20 years for an undercover coup plot in 2003 to topple the Justice and Development Party (AKP).
Hundreds of others, including journalists, academics and lawmakers, are being tried in separate cases over their alleged roles in plots to topple the AKP government, in power since 2002.