The search for Westport real estate agent Arthur Reinhart, missing for more than three weeks, ended last Friday when police discovered his body near a cemetery in Portsmouth, N.H., but as of early this week the cause of his death and his lengthy disappearance remain a mystery.

The remains of Reinhart, 50, an agent with Prudential Connecticut Real Estate on Post Road East, were found in a wooded area behind Mount Calvary Cemetery in Portsmouth about 11:45 a.m. last Friday. Reinhart's Jeep, with all his belongings, was found in a commuter parking lot April 13 not far from where his body was located by police using K-9 search dogs, according to New Hampshire media reports.

"At this point, we do not have any new information beyond what we learned on Friday," Portsmouth Police Detective Rochelle Jones told the Westport News on Monday. "We are still treating Mr. Reinhart's death as untimely."

A spokeswoman from the New Hampshire chief medical examiner's office said Monday that results from Reinhart's autopsy were not expected for at least six weeks.

"He was a good man. We'll miss him a lot," Jonathan Deak, who was Reinhart's supervisor at Prudential Connecticut, said Friday.

Deak added that friends of Reinhart plan a memorial service for him in Cambridge, N.Y., on June 19, which would have been his 51st birthday. Reinhart lived in Cambridge from 2005 to 2009, prior to joining Prudential Connecticut. A memorial service in Fairfield County will likely take place within the next week or two, Deak added.

In an interview with the Westport News after news of Reinhart's disappearance surfaced, Deak praised Reinhart professional record. "He was friendly and personable," he said. "He was very polite and worked well with clients." Calls made Friday to Reinhart's brother, Robert, who lives in North Carolina, and his sister, Anita, who lives in Hillsborough, N.H., were not returned.

The last known sighting of Reinhart was April 2 as recorded by a surveillance camera as he used an ATM in Stratham, N.H., according to New Hampshire television station WMUR-TV. Portsmouth is located about 10 miles northeast of Stratham.

The tape allegedly shows Reinhart checking his account at 3 p.m., the television station reported. On the same day, Reinhart made his last reported contact by email and phone with friends from a hotel in Provincetown, Mass. He was not heard from since then.

"We treat all deaths like this as suspicious," Portsmouth Police Capt. Corey MacDonald said Friday at the scene, the Manchester Union-Leader newspaper reported.

He also was quoted by the newspaper as saying, "There are no immediate apparent signs of foul play."

Reinhart had not been seen by family or colleagues since he left the Lexington, N.C., home of his brother, Robert, on March 22. He reportedly stopped at hotels in Virginia and Pennsylvania as he drove back north.

"We're currently going through everything in the car to find out if anything in there may point us to one thing or another," police Lt. Mike Maloney had told the Union-Leader on April 19.

"We have found some of his personal documents, but not a full wallet with everything in it," Sgt. Dave Keaveny told the newspaper. "There are some things in there that one might think he would have on him." Investigators and Reinhart's family previously told the Westport News they had no idea why Reinhart or his vehicle would have been in Portsmouth.

Staff writer Paul Schott contributed to this report.