Tragedy struck the family of Boston Celtics All-Star Isaiah Thomas on Saturday. According to KIRO7, a CBS-affiliated television station in Seattle, Thomas' young sister died in a car accident in Federal Way, Washington early Saturday morning.

From KIRO7:

The Tacoma woman who died in a one-car accident on Interstate 5 in Federal Way Saturday morning is Chyna J. Thomas, 22, the sister of NBA star Isaiah Thomas, according to family friends.

Chyna Thomas died at the scene of the accident on the shoulder of I-5, according to the Washington State Patrol who identified her.

The wreck occurred around 5 a.m. on southbound Interstate 5 near South 288th Street, according to the Washington State Patrol.

Photo of the incident (via KIRO7):

isaiah-thomas-sister-accident

Thomas and the Celtics are set to play Game 1 of their first-round matchup against the Chicago Bulls on Sunday at 3:30 PM EST. We wish him and his family the best during this hard time.