ARLINGTON (CBSDFW.COM/AP) – Arlington police are investigating a murder-suicide outside of a school.

The shooting happened just before 6 p.m. Friday in the 1100 block of West Randol Mill Road, but it’s who witnessed the shooting that has officers concerned.

Arlington police say a man in his 40s had just picked up his daughter at the Country Day School of Arlington. When the man and daughter walked outside, he was shot by a man in his 20s, police say.

The father was taken to Arlington Memorial Hospital, where he later died from his injuries.

Arlington police said Steve McIntosh, killed outside the day care on Friday evening, is married to a counselor at the University of Texas at Arlington. She had been counseling the shooting suspect but recently stopped and referred him elsewhere. A spokesman for the Tarrant County medical examiner said he could not yet release his name early Saturday.

Police said they have no indication that the shooting suspect and the counselor had any relationship other than a professional one.

Employees told officers that they heard gunshots just after the man and his daughter walked outside.

The 3-year-old was not injured in the shooting.  She is now with her family.  No other children were at the school at the time.

Arlington Police say this is the 7th homicide in their city this year.

The Associated Press contributed to this report.