NewsNation) — Blood evidence found in the home of Maxwell Anderson, the Milwaukee man accused of dismembering and killing 19-year-old Sade Robinson after they went on a date, does not match the victim’s DNA.

Lt. Steve Spingola, a former Milwaukee investigator who worked on the Jeffrey Dahmer case, told NewsNation’s Ashleigh Banfield that the testing results aren’t a surprise.

“They haven’t said whose blood it is. It could be his blood,” Spingola said during an appearance on “Banfield.” “I don’t think this lends (to the suspicion) that there’s any other victims here.”

Anderson, 33, pleaded not guilty during a court appearance to charges of first-degree intentional homicide, mutilating a corpse and arson in the death of Robinson, 19.

Anderson waived his right to a preliminary hearing. He’s due back in Milwaukee County Circuit Court on May 16, local news outlets reported.

The court appearance was Anderson’s first since his arrest April 4, two days after a leg believed to belong to Robinson was found by a passerby along Lake Michigan in Cudahy, Wisconsin. The leg had been severed just below the hip.

A torso and an arm believed to belong to Robinson were found Thursday morning along a remote stretch of tree-lined beach in South Milwaukee about a quarter of a mile (400 meters) from an apartment complex, the Milwaukee County Sheriff’s Office said.

Anderson is being held on a $5 million bond.

Robinson was reported missing April 2 by a friend. An employee of the building where Robinson lived told police that Robinson was excited about a date she had planned for April 1, according to the complaint.

Surveillance video from a restaurant showed Robinson and Anderson sitting together at a bar on the evening of April 1. Her burned car was found the next morning.

The Associated Press contributed to this report.