A New Jersey man wanted as a material witness in the Washington-area sniper shootings has been arrested in Michigan.

Nathaniel Osbourne, 26, was arrested this morning without incident in Flint, Michigan. Osbourne is co-owner of the car used by John Allen Muhammad, 41, and John Lee Malvo, 17, the two suspects charged with six of the 10 fatal sniper shootings.

FBI spokeswoman Linda Vizi stressed that Osbourne is not a suspect in the sniper shootings.

Prosecutors, meanwhile, are contemplating who will first try the suspects on allegations they planned and executed the three-week long killing spree through numerous local jurisdictions.

Six of the 10 people fatally shot were slain in Maryland, three in Virginia and one man was killed while talking down a Washington, D.C. street. Another death believed to be linked to the case happened outside an Alabama liquor store.

Montgomery County Attorney Doug Gansler said that while the crimes transversed many jurisdictions, most of the killings occurred in his.

"I think the general consensus is that the case will be tried first in Montgomery County," Gansler said. "We have the best evidence in the case. Also, the investigation was run out of Montgomery County."

He said he would be ask for the death penalty for Muhammad -- in spite of the fact Maryland imposed a moratorium on executions in May. Maryland Governor Parris Glendening earlier told reporters that the moratorium was meant to be a temporary measure.

Prosecutors in Virginia have also said they plan to seek the death penalty, as does Alabama.

U.S. Justice Department officials are still weighing whether to bring their own federal charges or allow the states to handle the court proceedings.

Muhammad is being held in a maximum-security state prison in Baltimore. It's unclear where Malvo is being held.

A law-enforcement source told the Associated Press that Malvo tried to escape custody Friday by going through a panel in an interrogation room ceiling but investigators were able to pull him back down.

A central piece of evidence police have on the duo is their 1990 blue Chevy Caprice, in which police found a gun matching that used in the sniper shootings.

Along with the rifle, authorities reportedly found a scope and a tripod. Additional reports said the car had a hole in the trunk, which would allow someone to fire a weapon without being seen.

'Superhero Moose'

Praise is also being heaped on Montgomery Police Chief Charles Moose, who was the media frontman for the tense three-week investigation.

Banners and signs have sprung up along major Baltimore streets declaring Moose a "superhero" and urging him to run for president.

Gifts and flowers have also poured in to police headquarters in Rockville, where many of Moose's press briefings took place.

Police spokeswoman Nancy Nickerson said Moose's office "looks like the botanical gardens" and nearly all of the messages left outside the station are addressed directly to Moose.

Gifts include Girl Scout cookies, homemade chicken soup and pictures drawn in crayon, apparent gestures from elated children now free to run and play outside in relative safety.

Pro-Moose websites have also popped up. Chiefmoose.com, which has been inundated with more than half a million hits, calls him an "eloquent, passionate man" who is "really powerful and mighty."

The site also sells Chief Moose t-shirts, lunch boxes, and coffee mugs, all adorned with a cartoon of Moose wearing a Superman-like outfit.

On Friday, governors from Maryland, Virginia, as well as senators and the mayor of Washington, D.C. gushed praised for Moose, saying he performed extremely well under great pressure.