ALTUS, Okla. (CBSDFW.COM/AP) — A 56-year-old man who died on the Fourth of July is among two Texas residents who authorities say drowned in separate swimming incidents in Oklahoma.

The Oklahoma Highway Patrol says Robert Leo Kollasch of Austin, Texas, died Thursday while swimming in Lake Altus, about 110 miles (177 kilometers) southwest of Oklahoma City.

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Troopers say Kollasch was a passenger on a boat when he jumped into about 5 feet of water and never resurfaced. The victim was pulled from the water by bystanders and later pronounced dead at a hospital.

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Authorities in Davis, meanwhile, say a 27-year-old woman from North Texas died on Wednesday when she slipped from a ledge and didn’t resurface at Turner Falls, about 70 miles (113 kilometers) south of Oklahoma City. The victim hasn’t been identified.

Turner Falls, Oklahoma (credit: Turner Falls website)

A 7-year-old North Texas boy also died on the fourth at Lake Lavon, as well as a 17-year-old who drowned at Grapevine Lake.

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(© Copyright 2019 CBS Broadcasting Inc. All Rights Reserved. The Associated Press contributed to this report.)