Fairfax County Police report two people in Fairfax County died in drowning accidents following heavy, sudden rainfall on Thursday.

Jack Donaldson, 12, was reported missing around 6 p.m., believed to have been swept away by flood waters in his backyard in the 9700 block of Marcliff Court in Vienna. Numerous police and fire personnel responded to the scene in the torrential downpour to search for the boy. His body was found around 8 p.m. in Piney Branch Creek at Lawyers Road.

Donaldson was a student at the Dominion Christian School in Oakton.

Detectives are continuing to investigate.

In another incident at around 7 p.m., police and emergency personnel responded to an apparent drowning of a 67-year-old man. He had been driving his Toyota Yaris in rising waters near Beech Mill Road at Club View Drive. The man, Arsalan Hakiri, was swept downstream in his car. As he apparently tried to get out, he was swept into the creek and drowned near Carrwood Drive in Great Falls.

Detectives from the county's Crash Reconstruction Unit are continuing to investigate.

Read full Friday flood coverage here.

Recap Thursday's flash flooding here.