A man opened fire at a suburban Houston home Wednesday, killing four of children as well as two adults who were with them, and critically wounding a 15-year-old girl, authorities said.



The teenager was able to call 911 and later warned deputies that the gunman planned to go to her grandparents' home to kill them, said Deputy Thomas Gilliland of the Harris County Sheriff's Office.



The suspected gunman fled but eventually surrendered after a three-hour standoff with deputies who had cornered him in a car in a nearby cul-de-sac.



Harris County Precinct 4 Constable Ron Hickman told reporters Tuesday morning that the suspect has been identified as Ron Haskell, 33.



Hickman said Haskell would be charged with multiple counts of capital murder.



Hickman said Haskell was wearing a pullover FedEx shirt but investigators don't know if he works for FedEx or just got hold of the shirt.



Haskell's relationship to the victims wasn't clear, Hickman added, though it appeared a divorce was involved.



Earlier, authorities had said the suspect was the younger victims' father and his estranged wife was out of town.



The sheriff's department said precinct deputy constables were called to the house in the northern Houston suburb of Spring about 6 p.m. Wednesday and found two adults and three children dead. Another child later died at a hospital.



Spring is a middle-class, normally quiet community.



Killed were two boys, ages 4 and 14; two girls, ages 7 and 9; a 39-year-old man and 33-year-old woman, said Gilliland.



"It appears this stems from a domestic issue with a breakup in the family, from what our witness has told us," Assistant Chief Deputy Constable Mark Herman of the Harris County Precinct 4 Constable's Office told reporters. He did not explain further.



Gilliland said the teenager was in "very critical condition" at Memorial Hermann Hospital in Houston late Wednesday night.



After the 15-year-old survivor told deputies that the gunman was headed to her grandparents' home, they were able to pass along the warning, he said.



Deputies beat him to that home, reports CBS Houston affiliate KHOU-TV.