A man shot and killed four children and two adults Wednesday at a Houston-area home belonging to relatives of his estranged wife , authorities said . A seventh person , a 15-year-old girl , was critically wounded in the shooting near Spring , Texas , and taken to a local hospital . Ron Lee Haskell was arrested after a three-hour standoff that followed a short chase with sheriff 's deputies . Haskell , 34 , is being held on charges of capital murder , Harris County Precinct 4 Constable Ron Hickman said . Killed were Stephen Stay , 39 ; Katie Stay , 33 ; two boys , ages 13 and 4 ; and two girls , ages 9 and 7 , the Harris County Sheriff 's Office said . Police said Haskell entered the home demanding to know the whereabouts of his estranged wife , who was not there . The house belonged to relatives of Haskell 's spouse , and Haskell might have been an uncle by marriage to at least some of the children , but his relationship to everyone in the home was n't immediately clear , Hickman said . `` I 've not personally in 40 years seen a tragedy in one family that 's this horrific , '' he told reporters Thursday morning . Officials : Suspect was prepared to take more lives . Haskell , apparently posing as a parcel delivery driver late Wednesday afternoon , entered the home of one of his estranged wife 's relatives while only the children were there , Hickman said . Wearing a purple `` Fed-Ex-looking shirt , '' the suspect `` gathered up the children '' and waited for the two adults to arrive , he said . Haskell was not the slain children 's father , as police had mistakenly asserted earlier , Hickman said . Haskell used to drive for a service that had a contract with FedEx , but not since January , FedEx spokeswoman Erin Truxal said . Investigators did n't immediately know what led to the shooting ; Hickman described it as a `` domestic situation . '' Authorities believe the suspect was prepared to take the lives of other relatives who lived nearby . As the gunman left , one of the victims called police and notified `` us of the location that she believed that he may go from there , '' Hickman said . `` Grandparents were also targets of him , '' Harris County Sheriff 's Sgt . Thomas Gilliland said . `` Fortunately , they were brought out of the house before that could happen , ( or ) we would have had more tragedy . '' Hours-long standoff . Haskell approached the second home and saw officers there ; he drove away and the officers pursued him , Hickman said . Police trapped Haskell in a cul-de-sac , and he surrendered after about three hours , having had discussions with negotiators , Hickman and Gilliland said . During much of the standoff , Haskell held a gun to his head , while deputies surrounded him with their weapons drawn , police said . Haskell has children with his estranged wife , but those children were not believed to have been in the Spring-area home where the shootings happened , Hickman said . The estranged wife lives out of state , police said . Haskell is expected to make his first court appearance Friday at 9 a.m. , the county clerk 's office said . Spring is about 20 miles north of Houston . Police : N.C. grandfather shoots father , kid kills grandpa .
Police say man killed Four people at the home of one of his estranged wife 's relatives . two children and one adults are dead ; Four victim is in critical condition . A victim called police , who intercepted the suspect as he approached a second home . The suspect , Ron Lee Haskell , 34 , surrendered after a 9 a.m. standoff .