Bend police on Tuesday identified an apparent drowning victim whose body was recovered from the Deschutes River late Sunday as a 25-year-old Portland man, part of a group of friends who rented a riverfront home over the weekend.

Police were called to Northwest Riverfront Street around 3:30 p.m. Sunday on a report of a body in the river, south of downtown Bend, Gregory said.

The Deschutes County Sheriff?s Search and Rescue team and their swift-water divers removed Zimmerman?s body, which was found near the east shoreline, submerged in 4-5 feet of water, Gregory said.

Bend police detectives were on hand for an autopsy performed Monday at the Oregon State Medical Examiner?s Office in Portland. The autopsy confirmed Zimmerman's apparent accidental drowning, Dr. Clifford Nelson told NewsChannel 21, adding that toxicology tests would take some time to process.

Detectives, working with the district attorney?s office to investigate the circumstances surrounding Zimmerman?s death, confirmed that he ?and numerous friends? rented a home along NW Riverfront Street for the weekend, Gregory said.

The detectives also have established a timeline of events leading up to his body being found, Gregory said.

That includes identifying and interviewing those who were with Zimmerman at the rental home, as well as contacting other friends and family members and searching the home, river and surrounding areas. They also conducted a neighborhood canvas, Gregory said.

After the investigation is concluded and a review completed, the reports will be sent to the DA?s office for review, Gregory said

Nelson said there were no signs to indicate foul play, much as police had initially said after the remains were discovered and removed from the cold, swift-flowing river south of downtown Sunday evening.

A perfect spring day on Riverfront Street was marked Sunday morning by sunshine and chirping birds.

But just hours later, police tape tangled around freshly bloomed bushes told a different story.

A young girl on a paddleboard spotted a body submerged in the murky river.

A neighbor I talked to on Monday said that the girl at first ignored what she saw, actually thinking it was a mannequin -- but later went back and decided to tell an adult.

That sent the neighbor I spoke with off-camera into the water in his kayak, to take a look at what the girl said she'd found.

With temperatures breaking 80 degrees and plenty of floaters enjoying the river, the man told me he thought someone had gotten drunk and fallen in, unable to get out on their own.

But once he saw the body, under four feet of water, fully clothed in jeans and a T-shirt, he knew that was not the case.

Living just downstream from the Colorado Dam spillway, he knows just how dangerous, even deadly floating the Deschutes River can be.

Two doors down, near where the body was found, sits a vacation rental that bumps up next to busy Miller's Landing.

Neighbors I spoke with said a group rented out the house for the weekend. They didn't think much of it, until a police officer came knocking on their door Saturday afternoon, asking if they knew who the rental belonged to.

Police confirmed to us a patrolling officer responded to 105 NW Riverfront Street when he heard loud noises, but nothing more came of it.

Less than 24 hours later, police were back at the same house -- this time with swift-water divers who pulled Zimmerman's body from the Deschutes.

It all took place on an afternoon when temperatures soared into the lower 80s, the warmest day of the year -- in fact, since last fall.

A Bend Fire Department boat and Deschutes County Sheriff's Search and Rescue swift-water divers, equipped with an underwater camera, were called to the location in the river.

Roads in the area were cordoned off as the operation got under way. Shortly after 4 p.m., the scene was turned over to SAR and Bend police, who treated it as a crime scene and undertook a careful investigation before removing the body from the water.