ANKARA, Aug. 27 (Xinhua) -- Turkey on Tuesday received the second batch of the equipment of Russia-made S-400 defense system, Turkish Defense Ministry announced.

"The second batch of components of S-400 missile defense system has arrived at Murted Air Base near Ankara," the ministry said in a statement on Twitter.

"The delivery process will continue for around one month," it added.

The first batch of S-400 defense system was delivered from Russia to Turkey in July and completed on July 25.

Turkey signed a contract with Russia in April 2017 to purchase the advanced S-400 systems.

Tensions between the United States and Turkey have escalated ever since over the deal, as Washington claimed that the S-400 system would be incompatible with the NATO system and may expose its confidential military information to Russia.

Washington has repeatedly threatened to halt Turkey's purchase of F-35 fighters if Ankara goes ahead with the delivery of the S-400s.