Davis, Okla: Authorities say two University of Texas students from India drowned at a popular tourist destination in Oklahoma.

The Davis Police says the foreign exchange students died Tuesday at Turner Falls, near Davis. One of them was struggling in a pool near the falls and the other jumped in to help. Neither resurfaced.

Police say they weren't wearing life jackets.

The state Medical Examiner's Office on Wednesday identified the two as 23-year-old Ajay Kumar Koyalamudi, from Karnataka's Raichur district, and 22-year-old Teja Koushik Voleti, who belongs to Hyderabad.

Police say they were both Indian nationals who attended the University of Texas at Arlington.

Two other people from India drowned at Turner Falls during the July Fourth holiday weekend.

The City of Davis, 70 miles (110 kilometres) south of Oklahoma City, hired no lifeguards for the popular swimming hole this year.