Three people were killed, including Deputy Turkish Consul Wednesday, firing in the city of Arbil, the largest cities in the Kurdistan region of Iraq.
The Turkish Foreign Ministry killed a staff member of the Turkish Consulate in the shooting in Erbil in an armed attack on a restaurant on Wednesday.
"We continue our contacts with the Iraqi authorities and local officials to find the perpetrators of the attack," the foreign ministry said in a statement.
For its part, the Turkish presidency promised to respond after the killing of one of its diplomats in Erbil.
Reuters quoted security officials in the Kurdistan region of Iraq that at least three Turkish diplomats were killed and others wounded on Wednesday in a shooting in the city of Erbil, capital of the region.
He said unidentified gunmen opened fire on a restaurant diplomats eat their food in it.
A source said at least one person carried out the attack and fled, while eyewitnesses reported the deployment of security barriers in the place and around the area of Ainkawa, which is a center of restaurants in Erbil.
There was no immediate claim of responsibility for the attack, and spokesman for the PKK's military wing Deyaar Denir denied that the party had anything to do with the attack.
Neighboring Turkey has launched an air and ground offensive on a mountainous area in northern Iraq, targeting PKK hideouts, which the United States and the European Union also consider a "terrorist organization."
On the other hand, the PKK announced the death of a member of the party's foreign relations committee, Sarhad Varto, in addition to four other gunmen in a Turkish raid on a party site in northern Iraq.
This is the second leader to be targeted after the death of Diari Gharib, one of the most prominent leaders of the party on the fifth of this month after being targeted in a Turkish raid.
Turkish warplanes have stepped up attacks on PKK positions in northern Iraq.
For his part, accused the PKK within the region to work for the Turkish intelligence to target its leaders, and threatened to hunt down the party.