US basketball star Bryce Dejean-Jones has been shot dead after breaking into a Texas apartment he believed to be his girlfriend's, according to police.
A man living at the flat was sleeping when he heard his front door kicked open, Dallas Police Senior Corporal DeMarquis Black said.
When Dejean-Jones began kicking at the bedroom door, the man retrieved a handgun and fired.
Officers who responded found Dejean-Jones collapsed in an outdoor passageway. He was taken to hospital where he died.
The New Orleans Pelicans guard was 23.
In a statement, the Pelicans said: "We are devastated at the loss of this young man's life".
According to the player's agent Scott Nichols, Dejean-Jones was visiting his girlfriend for his daughter's first birthday, which was on Saturday.
He said the girlfriend returned to the apartment while Dejean-Jones went for a walk after they had gone out.
She lives on the fourth floor, and Dejean-Jones, who was visiting the complex for the first time, went to the third.
"He went to the wrong apartment unfortunately and I think he thought his girlfriend locked him out, so he was knocking on the door, banging on the door, it's locked." Nichols said. "So one thing led to another."
It is legal in Texas for someone to use deadly force in order to protect themselves from intruders.
Several NBA stars have sent their condolences. Among them were Shabazz Muhammad of the Minnesota Timberwolves, Brooklyn Nets guard Shane Larkin and Dejean-Jones' Pelican teammate Quincy Pondexter:
In Dejean-Jones' only NBA season, which ended in February because of a broken right wrist, the 6-foot-6 guard started 11 of 14 games and averaged 5.6 points and 3.4 rebounds.