Turkish Foreign Ministry on Saturday summoned the Swedish charges d'affaires in Ankara over the demonstrations staged by the supporters of the outlawed Kurdistan Workers' Party (PKK) during a protest on Thursday in the Swedish city of Gothenburg, reported Xinhua, quoting Turkish state-run Anadolu Agency.
Ankara also conveyed its "strong reaction" to another demonstration held on the same day in Stockholm, the agency quoted anonymous Turkish diplomatic sources.
"In this context, our expectation that the perpetrators of the incident will be identified, necessary legal and judicial measures will be taken, and concrete steps will be taken in light of the commitments recorded in the tripartite memorandum have been emphasized," said the sources.
Finland and Sweden's NATO bid was initially blocked by Turkey, which accused them of supporting anti-Turkish groups as they rejected Ankara's extradition requests for suspects affiliated with the PKK and the Gulen Movement.
The PKK, listed as a terrorist organization by Turkey, the United States and the EU, has been rebelling against the Turkish government for more than three decades.
The Gulen Movement is led by and named after the U.S.-based Muslim preacher Fethullah Gulen. The Turkish government accuses the movement of masterminding the 2016 failed coup in which at least 250 people were killed.