The coroner ruled the 7-year-old's death was accidental.
Authorities say a Carbon County boy has died following a swimming accident in the Lehigh River that also killed his grandmother.
Police told The Morning Call that the two were swimming in the Lehigh River in Lehighton at about 3:30 p.m. Friday when they were caught in a strong current.
Authorities said 49-year-old Wanda Wentz of Lehighton was pronounced dead shortly afterward at a Lehighton hospital.
First Deputy Lehigh County Coroner Eric Minnich told the paper that 7-year-old Nolan Richie of Coaldale, Wentz's grandson, died at Lehigh Valley Hospital in Salisbury Township at 1:05 a.m. today.
He said the death was accidental and due to drowning in what he called "a terrible swimming accident."
The accident happened at a popular spot for kayakers and rafters near an old railroad trestle.