A protest of "We continue the change" is scheduled for 6 p.m. in front of the municipality in Varna, BNR reported.
The entire parliamentary group of the party is arriving in the seaside city. The former co-chair of the formation, Kiril Petkov, will arrive in the morning.
The protest is due to the actions against Varna Mayor Blagomir Kotsev. He was detained after his office in the municipality was searched in his presence late last night.
His PR Anton Zhelev informed that Kotsev was taken out of the municipality in a police car.
Kotsev's detention is for 24 hours.
The measure will be reviewed in Sofia and will be appealed.