The sister of Boston Celtics star Isaiah Thomas was killed in a one-car accident early Saturday morning, according to Washington State police.
Chyna Thomas, 22, died at the scene of the accident on Interstate 5 in Federal Way, Washington, police said.
A source told ESPN's Jeff Goodman that Isaiah Thomas received news of his sister's accident after taking part in Celtics practice in the afternoon.
According to the source, Thomas is expected to play when the team open its first-round series against the Chicago Bulls on Sunday in Boston.
"We are terribly saddened by the tragic loss of Chyna Thomas," the Celtics said in a prepared statement Saturday.