Fort Riley ? Testimony from a key prosecution witness about a double shooting by an Army sergeant fits the evidence from the crime scene, an investigator testified Wednesday during the soldier’s court martial.

After testimony from crime scene investigator Alexander Jason, the prosecution rested its case before the eight-member military panel.

Sgt. Aaron Stanley, 23, of Bismarck, N.D., faces two counts of premeditated murder for the killings of two fellow soldiers last September at Stanley’s farmhouse in Clay Center, about 30 miles west of Fort Riley. Stanley’s defense team presented eight witnesses before recessing for the day Wednesday. The court martial was to resume today at 8 a.m.

Testifying Tuesday against Stanley was Sgt. Eric Colvin, 23, of Papillion, Neb., who was involved with Stanley in making methamphetamines and growing marijuana. Prosecutors contend protecting the operation was the motive for the killings.

Jason, who has been an investigator for more than 30 years, described the location of shell casings, blood splatters, positions of the victims and bullet marks in the kitchen. He said the evidence was consistent with Colvin’s story.

But Stanley’s lead attorney, Capt. Anita Robbins, asked Jason how he got information out of Colvin when other investigators couldn’t.

Jason replied: “I just asked him.”

Colvin’s credibility is an issue during Stanley’s trial, with defense attorneys suggesting Colvin’s memory was clouded by his war experiences and drug use. Colvin testified that he watched Stanley gun down the two victims, Staff Sgt. Matthew Werner, 30, of Oxnard, Calif., and Spc. Christopher D. Hymer, 23, of Nevada, Mo.

The first defense witnesses discussed Werner’s state of mind before the deaths.

Also taking the stand Wednesday was Nichole Lewis, who was in a relationship with Hymer at the time of his death. Testifying for the defense, Lewis said she bought Hymer $10 in gas and cigarettes just before he and Werner went to Stanley’s farm.

“He gave me his dog tags, kissed me on the cheek and told me that he loved me, if something happened,” Lewis said.

Stanley has acknowledged shooting Werner and Hymer, but his attorneys contend he did so to defend himself and Colvin.

Stanley pleaded guilty Monday to drug use, drug possession, being absent without leave and adultery. His sentencing on those charges has not been set.

The AWOL charge stemmed from Stanley being unable to report to duty when he was in jail on drug charges.