Twins Stephen and Michael Eckel and a third unidentified girl were killed in a deadly single car crash at about 3:00 a.m. Monday in Arlington.
Police say a fourth person has died of injuries suffered last week in a one vehicle crash in Arlington.
Arlington police say 18-year-old Christian Martinez of Arlington died Tuesday. He had been hospitalized in Fort Worth since the Oct. 10 wreck.
Martinez was a passenger in a car that went out of control and struck a tree, killing twin brothers and another passenger. Police identified those victims as 21-year-olds Stephen and Michael Eckel and 19-year-old Danielle Ruthstrom.
Police say Stephen Eckel was driving.
Another young man in the car was injured but survived.
Investigators say it appears that speed and alcohol contributed to the deadly accident.