A 20-year-old Dacula man has been arrested in connection with a double shooting over the weekend, five months after he was released from prison.

The shooting left a man dead and an 18-year-old woman hospitalized in intensive care.

Devin Anthony Grell is being held without bond at the Gwinnett jail on charges of murder, aggravated assault and possession of a weapon during a crime.

State records show Grell was released from prison in February after serving a five-year sentence in the near-fatal stabbing of a 15-year-old classmate at Dacula High School. The stabbing occurred in 2003, when Grell was 16.

Gwinnett police say that on Friday Grell went to the home of Donny Emmanuel Edouard on Alcovy Park Drive in Lawrenceville. There, he allegedly gunned down Edouard, 20, and Brianna Morgan, 18. Witnesses told police they heard gunshots come from the Lawrenceville home and then saw a man run out, get into a vehicle and drive away.

Edouard died at the scene.

Morgan underwent surgery over the weekend at an area hospital, where she was still in intensive care Monday.

Police said Morgan has been able to talk with investigators. They are not releasing the name of the hospital where Morgan is being treated because of concern for her safety, said Cpl. Illana Spellman, a Gwinnett police spokeswoman.

"The shooter is behind bars right now, but we don't know who else may be involved," Spellman said.

The motive behind the shooting was still under investigation. Police said Grell knew the victims.

Grell's attorney in the Dacula High School stabbing case said Monday he was "saddened" to hear about the recent shootings.

Upon entering a guilty plea as an adult in December 2004, Grell was sentenced to six years in prison followed by nine years on probation.

Grell was paroled a year and a half early, according to Kim Patton-Johnson, spokeswoman for the state Board of Pardons and Paroles. She said Grell had been living in Dacula with his parents since February, working two jobs and attending a program called Moral Reconation Therapy, which addresses the criminal thinking process.

"He had no parole violations," Patton-Johnson said. "We had been visiting him at home, he had been reporting to the office. There was just no indication that anything out of the ordinary was going on."

Keith Adams said his former client would have been better off remaining in the Juvenile Court system. There, Grell may have been rehabilitated and treated for "psychological issues," Adams said.

Adams told the AJC in 2004 that Grell had been diagnosed as suffering from "intermittent explosive disorder and impulse control issues."