The police have detained four persons and identified over 300 participants of the conflict occurred in Donetsk downtown on Thursday evening, chief of Donetsk regional police office Kostiantyn Pozhydayev reported.

He said that these people have been identified by photo and video materials and now are being delivered to police department to conduct the necessary investigation procedures, the public relations department of Ukraine's Foreign Ministry in Donetsk region reported on Friday.

Pozhydayev asked journalists to provide the police all photos and video recording of the violent events in Donetsk on Thursday.

The arrested persons will be charged under the Article 294 of the Criminal Code (mass disorder), and if found guilty could face from five to fifteen years of imprisonment.