LEWISVILLE (April 1, 2009)—Ryan Trenard Harrison, 18, of Dallas, was in custody Wednesday, charged in the shooting death of University of North Texas senior Germaine Lance Dawson, the former Rockdale High School football standout who was scheduled to graduate this spring and hoped to become a high school coach.

Dawson was found at around 8:30 a.m. Friday, a day after he was reported missing, slumped inside a white SUV in a parking lot along the northbound frontage road of Interstate 35 in Lewisville.

He had been shot once in the head

An affidavit submitted for the arrest warrant says Dawson was shot to death after a drug deal that “went left.”

The affidavit says Dawson’s girlfriend told investigators Dawson went to meet someone from Dallas to sell some marijuana.

Earlier reports indicated Dawson had gone to the store.

An informant whose name was redacted from the affidavit released Wednesday told investigators Dawson wanted to sell some marijuana and asked if he knew anyone who would buy it.

The informant told investigators he gave Dawson Harrison’s phone number, according to the affidavit.

The next day, after learning Dawson was missing, the informant said he called Harrison “who told him he that he had the weed and the money and things went left,” according to the affidavit.

Phone records showed that the last call on Dawson’s phone was to Harrison and that it was placed from the same location where Dawson’s body was found.

Lewisville police officers assisted by the Texas Rangers, Dallas police and the DFW Fugitive Apprehension Strike Team, arrested Harrison at about 7 p.m. Tuesday in the 200 block of Creek Cove Drive in Dallas.

Harrison’s bond was set at $250,000.

Police are trying to determine whether others may have been involved in the shooting.

Dawson played linebacker and safety in 31 games at North Texas and started in 11 of them.

He was a graduate of Rockdale High School where he was team captain and was named second-team All-State by The Associated Press and won first-team all district honors.

He lettered in football, track and basketball while in high school, according to his UNT biography.

Funeral services for Dawson are at 11 a.m. Friday at Phillips & Luckey Funeral Home in Rockdale.

Burial will follow at Sandy Point Cemetery in Dime Box.