HE WAS A FATHER AT THE AGE OF 15 — AND NOW -- AT 16 -- HE’S CHARGED WITH MURDER. IN FACT... DETECTIVES SAY HE HAD HIS NINE MONTH OLD DAUGHTER WITH HIM WHEN HE KILLED ANOTHER TEEN LAST NIGHT. IT HAPPENED AT COORS AND OLD COORS. SHELTON DODSON IS THERE WITH THE LATEST ... SHELTON: UNDER ARREST IS ISAAC ROMERO. DETECTIVES SAY HE SHOT AND KILLED 18-YEAR-OLD RAYMOND GONZALES LAST NIGHT... HE ALSO TOLD DETECTIVES GONZALES WAS A GOOD FRIEND OF HIS. ROMERO CAME TO THIS CAR WASH AROUND NINE LAST NIGHT...WITH HIM WAS HIS GIRLFRIEND, THEIR BABY DAUGHTER AND THE 16-YEAR-OLD EX- GIRLFRIEND OF THE VICTIM. INVESTIGATORS SAY AN ARGUMENT STARTED BETWEEN GONZALES AND HIS EX-GIRLFRIEND THAT ESCALATED TO A FIST FIGHT. AT SOME POINT INVESTIGATORS SAY ROMERO WENT TO HIS CAR, GRABBED A GUN, AND OPENED FIRE ON GONZALES AS HE SAT IN THE FRONT SEAT OF HIS S-U-V: : 'He, during the interviews, admitted to firing rounds toward the vehicle...but he also claims that he didn't realize the he struck Mr. Gonzales until sometime ready when people were talking about it and it was starting to show up on the news.' GONZALES WAS FOUND DEAD INSIDE HIS S-U-V JUST ACROSS THE STREET FROM THE CAR WASH. INVESTIGATORS DON'T KNOW IF HE DROVE THAT FAR AFTER BEING HIT WITH THE BULLET -- OR -- IF ROMERO FIRED AT GONZALES AS HE WAS TRYING TO DRIVE OFF. TWO DAYS AGO GONZALES WAS NAMED IN A POLICE REPORT FOR BREAKING INTO HIS EX-GIRLFRIEND'S HOME. DETECTIVES ARE THEORIZING THAT MAY HAVE BEEN AT THE ROOT OF THE ARGUMENT JUST BEFORE THE SHOOTING LAST NIGHT. REPORTING LIVE ALONG OLD COORS..., SHELTON DODSON, EYEWITNESS NEWS FOUR. A PORTALES MAN