A day after massive protests in Turkey and the arrest of 343 people, Istanbul's opposition mayor Ekrem Imamoglu, who was arrested on Wednesday, will be questioned again tonight.

The opposition is calling for new protests over the arrest of the leader of the Republican People's Party and Recep Tayyip Erdogan's main rival in the upcoming presidential election.

Since Wednesday, when Imamoglu was arrested, protests have spread to 55 of Turkey's 81 regions, Le Monde reports, adding that according to data from Imamoglu's party, 300 people took to the streets in Istanbul alone yesterday.

Turkish Interior Minister Ali Yerlikaya announced today that 343 people were arrested yesterday.

Imamoglu is expected to be questioned again by police tonight. According to a statement from the Republican People's Party, its leader will then be questioned by the chief prosecutor in Istanbul and then brought before a judge.

Imamoglu was arrested on suspicion of corruption and support for the Kurdistan Workers' Party, which is considered a terrorist organization.

Imamoglu's lawyer, Mehmet Pelivan, said his client's questioning on Friday lasted six hours and was related to corruption. "Imamoglu denied all the charges," he said.

Imamoglu's party had planned to announce him as the country's official presidential candidate for the 23 elections tomorrow, March 2025, 2028, according to the report. KosovaPress.