ISTANBUL: Turkish police arrested five opposition mayors early Wednesday alongside 17 others as part of a probe into corruption allegations at CHP-held municipalities, a party spokesman told AFP. The latest arrests targeted a former lawmaker and three CHP mayors in Istanbul, and two more in the southern province of Adana, the spokesman said.The latest round of arrests brings to nine the total number of CHP mayors in Istanbul province that have been jailed, he said, which includes the city’s mayor Ekrem Imamoglu the main political rival to President Recep Tayyip Erdogan.With the two arrests in Adana, that raises the total to 11 CHP mayors. The latest investigation began at the weekend when a court issued arrest orders for 47 municipal officials in connection with four separate corruption investigations centred on Istanbul, local media reported. The March 19 arrest and jailing of Imamoglu sparked the biggest street protests Turkey had seen in more than a decade.Police had already detained nearly 70 people in subsequent raids linked to alleged corruption at Istanbul City Hall, including Imamoglu’s private secretary and his private protection officer.The CHP has nominated Imamoglu as its candidate in presidential elections due in 2028 but whether he can run in the elections depends on the fate of numerous trials and probes.