Turkish police have arrested Istanbul’s mayor — a key rival of President Recep Tayyip Erdogan — as part of an investigation into alleged corruption and terror links.

As the detention of Istanbul's mayor and the arrest of more than 100 raise alarms over an escalating crackdown on opposition, ...

Analysis: The Istanbul mayor, Ekrem Imamoglu, was detained in a move the opposition condemned as politically motivated, ...

"It is utterly dangerous and wrong to mischaracterise the investigations," Turkish Justice Minister Yilzam Tunc said.

Istanbul Mayor Ekrem Imamoglu had emerged as Turkey’s strongest political challenger to President Recep Tayyip Erdogan. But ...