The military said the wounded soldiers had been "swiftly evacuated" to receive treatment. Ankara says that after Afrin it will target the Syrian town of Manbij, where YPG and US forces are deployed together.
While figures varied according to different sources, the Kurdish Red Crescent this week said that at least 348 civilians had been killed so far by continued Turkish airstrikes and artillery shelling.
Shortly after, it issued a second statement in which it announced that three more soldiers had been killed as well as six wounded, without giving details of the circumstances.
The latest casualties bring the number of Turkish soldiers killed since the launch of "Operation Olive Branch" to at least 40.
The Turkish military declined to comment on the Observatory report, but the Turkish state-run Anadolu news agency reported on Friday that Turkish attack helicopters had killed nine YPG fighters in the west of Afrin.
Turkish President Recep Tayyip Erdogan was informed of the incident during a visit to Senegal.
Meanwhile, the Turkish General Staff said in a statement on Saturday that a total of 2,434 YPG militants had been "neutralized" since the launch of "Operation Olive Branch" in Syria's Afrin on January 20.
Pro-regime fighters are present on several fronts in the enclave, according to the Kurds.
PKK has fought for independence in South-Eastern Turkey since 1978 but the YPG has denied any links to the group.
Erdogan's administration has refused to implement a 30-day United Nations Security Council (UNSC) truce in Afrin, despite Kurdish officials' announcement of adherence to the ceasefire and urgings from Western powers, including France and the US.
It is one of the bloodiest days for Turkish troops since they began a major offensive against Kurdish fighters in Afrin in January.
However, the YPG is supported by the United States and has been spearheading the worldwide coalition fight against the Islamic State (IS) group in Syria.
Liverpool 2-0 Newcastle
Liverpool eased their way through the rest of the game with important tasks ahead, such as a trip to Old Trafford next Saturday. Ayoze Perez had a great chance minutes later, but he made an ill-advised decision to try a cross and it was intercepted.
Zimmer, Vikings still sorting through QB situation
Neither 2015 starter Teddy Bridgewater , 2016 starter Sam Bradford nor 2017 starter Case Keenum is under contract for 2018. Sam Bradford has had a hard time staying healthy since entering the league in 2010 with the St.
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