Twenty-three people have been arrested, 13 others are facing criminal proceedings, and 30 have been declared wanted following a protest in Albania’s capital, Tirana, authorities said Sunday.

According to the State Police, officers were attacked for hours during Saturday’s demonstration, with protesters allegedly throwing stones, metal screws and spheres, wooden and metal sticks, pyrotechnic devices, Molotov cocktails and gas canisters fitted with firecrackers.

Several police officers were injured in the attacks and received medical treatment, authorities said.

The demonstration took place in various areas of the capital, where authorities also reported damage to state institutional buildings.

Following investigative and procedural actions under the direction of the Prosecution Office, police arrested 23 individuals, initiated criminal proceedings against 13 others, and declared 30 people wanted in connection with the events.

The arrested individuals range in age from 18 to 54, according to the police statement.

Authorities said the investigation remains ongoing, with police working to fully document the incidents, identify additional individuals allegedly involved and bring them before the law.

The case files have been referred to the Prosecution Office for further action.