Turkey yesterday detained all the top members of the country's main medical association, including its chief, after they criticised Ankara's offensive against Kurdish militia in Syria.

The arrests came after the Turkish Medical Association (TTB), which represents 80 percent of the country's physicians, issued a statement saying that conflicts lead to "irreparable problems" and that "war is a man-made public health problem".

The TTB ended its statement on Wednesday with the words: "No to war, peace right now".

Prosecutors swiftly launched a probe, after President Recep Tayyip Erdogan on Friday lashed out at the "so-called Turkish Medical Association" as "terrorist-lovers".

Erdogan again hit out at the group on Sunday, saying: "They are not intellectuals, they are a gang of unthinking slaves... They are the servants of imperialism."

Among those held was TTB director Rasit Tukel, state-run news agency Anadolu said.

The health ministry on Monday said it had filed a lawsuit seeking the removal of the 11 executive council members because they were "acting against the law".

ENTIRE EXECUTIVE BEHIND BARS

Turkish troops and their Syrian rebel allies launched a brutal offensive against Kurdish militia in the enclave of Afrin in northern Syria on January 20.

Ankara, which considers the Kurdish People's Protection Units (YPG) militia in Syria a "terror" group, has vowed to carry on and possibly expand the operation, despite international concern.

Turkey sees the YPG as the Syrian offshoot of the outlawed Kurdistan Workers' Party (PKK), which has waged an insurgency against the Turkish state since 1984.

Despite calls for restraint in Syria from the US and concern from the European Union, Turkey has stepped up its offensive in recent days, while threatening to further expand it and also cracking down on critics at home.

The Turkish interior ministry on Monday said 311 people including journalists and activists had been detained over accusations they were spreading "terror propaganda".

The TTB confirmed to AFP that all its top members had been detained, but an association official who did not wish to be named said that little information was immediately available as the arrests had took place in different parts of the country.

The TTB, which has more than 83,000 members representing 80 percent of physicians in Turkey, is the nation's leading medical association.