ANKARA, April 26 (Reuters) - Mortar fire from an area assessed to be under the control of Syrian government forces hit a military outpost in Turkey's southeastern province of Hatay, the Turkish army said on Wednesday, adding it had retaliated in kind after the attack.

In a statement, the army said a separate cross-border mortar attack had been carried out on a different military outpost, also in Hatay, by members of the Kurdish militant YPG earlier on Wednesday.

There were no casualties in any of the attacks, the army said.

On Tuesday, Turkish planes bombed Kurdish militants in Iraq's Sinjar region and northeast Syria, killing around 70 militants inside the two neighbouring states, according to a Turkish military statement. It said warplanes struck Kurdish militant targets in northern Iraq on Wednesday as well, killing six militants.

Turkey views the YPG as an extension of the Kurdistan Workers Party (PKK), which has waged a three-decade insurgency against the Turkish state for Kurdish autonomy in which more than 40,000 people have been killed. It is designated a terrorist group by Turkey, the United States and the European Union.

(Reporting by Tuvan Gumrukcu; Editing by Humeyra Pamuk) ((tuvan.gumrukcu@tr.com; +903122927021; Reuters Messaging: tuvan.gumrukcu.thomsonreuters.com@reuters.net))