EDINBURG, Texas (ValleyCentral) — An Edinburg woman shot and killed her brother late Saturday night while “allegedly playing” with a gun, police said.

According to the Edinburg Police Department, officers arrived at an apartment complex around 11 p.m. Saturday at the 1600 block of Tampa Street after receiving a call that a man had been shot.

The preliminary investigation had shown a 21-year-old woman had shot her 18-year-old brother while “allegedly playing with a handgun,” police said Sunday.

The “isolated incident” was described to media as a “shooting death,” according to a news release sent out Sunday.

The woman had no injuries and there was no other suspect in the case “at this time,” said Ashly Custer, communications and media director for the city of Edinburg.

The woman was taken into custody and was scheduled to be arraigned at 1 p.m. Sunday at the Edinburg Municipal Court. However, the arraignment was later postponed, Custer said in a followup message.

“Due to the sensitive nature of the this case, the arraignment has been postponed to [Monday],” Custer told news outlets Sunday afternoon.

The case remains under investigation.