Waco, Texas ? Investigators on foot and horseback searched a gravel pit near the Brazos River Tuesday for the body of Baylor basketball player Patrick Dennehy, who police believe was killed by a former teammate.

The teammate, Carlton Dotson, was charged with murder Monday in Chestertown, Md., near his hometown. He was ordered held without bail Tuesday, and his attorneys said they would oppose his transfer to Texas.

The search for the body was centered just miles from the Baptist university where Dotson and Dennehy were on the basketball team last season. Waco police Sgt. Ryan Holt said no body had been found by late Tuesday.

The search began Monday night after Dotson spent about two hours with authorities in Maryland.

Dotson, 21, admitted to FBI agents that he shot Dennehy in the head “because Patrick had tried to shoot him,” according to an arrest warrant released Tuesday.

Dennehy, 21, was last seen on campus June 12, and his family reported him missing June 19. The next day, Waco police said an informant reported that Dotson told someone he shot Dennehy in the head after the two argued.

Dotson was seen June 12 in the Texas hometown of his estranged wife, driving Dennehy’s Chevrolet Tahoe, the warrant said. The vehicle was found abandoned, without license plates, in Virginia June 25.

Dotson went to Chestertown, about 55 miles from his hometown of Hurlock, Md., Sunday and called 911, Chestertown Police Chief Walter T. Coryell said. When officers arrived, Dotson told them he “needed counseling” and was hearing voices, Coryell said.

Dennehy’s stepfather and mother, Brian and Valorie Brabazon, have said Dennehy was threatened shortly before his disappearance and reported the threats to his coaches.

Baylor basketball coach Dave Bliss said in a statement Tuesday that “Patrick never reported any threats to the coaching staff.”