A suspected vehicle bomb exploded in the city center of Turkey's eastern Van province on Monday, injuring at least 48 people, including two in critical condition and two police officers.
Van Governor Ibrahim Tasyapan told state-run Anadolu news agency that 46 civilians and four police officers were wounded in the attack at a police check point outside the party offices.
"Forty-six civilians and two police officers were injured after a bomb-laden vehicle... was blown up by members of the separatist terror organisation", it added, using a term to describe Kurdish militants.
At least 48 people wounded as large explosion hits near AK party headquarters in southern city, officials say. You can not support terrorist organisations as a mayor.
Zahir Soganda, chairman of the ruling party's Van office, told the Anadolu agency he was aware that threats of such an attack had been made after the mayors were replaced.
According to the 10-day-old Decree Law No. 674, the government is allowed to replace mayors and city council members who "have been actively engaged in acts of terrorism and openly providing support to terrorism", an Interior Ministry statement said.
The Turkish government granted permission for the family visit before the Muslim holiday of Eid Al-Adha, countering alarm over Ocalan's welfare.
The pro-Kurdish opposition party accused the government of an illegal "administration coup" against the Kurdish minority.
"You, as mayors and municipal councils, can not stand up and support terrorist organisations".
Turkey's restive southeast has suffered from bombings and other attacks after the militant Kurdistan Workers Party (PKK) abandoned a ceasefire in 2015.
On Monday, the Kurdish hunger strikes called an end to the action saying their demands had been met.
Jailed PKK leader Abdullah Ocalan believes a settlement of the three-decade war would be possible in six months if the state agreed to revive peace talks, his brother said on Monday after meeting him for the first time in two years.
More than 40,000 people have been killed since the PKK first took up arms in 1984.