Body parts were found in Biscayne Bay on Friday for the third day in a row.

A man in a boat spotted a plastic bag floating in the bay. There was a strong smell coming from it.

He tied a rope to the bag and brought it to shore, Miami police said.

“We do know from the smell and initial look that they are body parts,” said Miami Police Cmdr. Delrish Moss.

On Wednesday, a bicyclist saw remains in a plastic bag floating in Biscayne Bay near the John F. Kennedy Causeway. A few hours later, another bag was found by police divers.

The remains have been identified as Omar Laparra, 21, a laborer who had been missing since early Sunday morning.

On Thursday, more human remains – believed to be Laparra’s – washed ashore at two different points in Biscayne Bay.

“The likelihood is these are going to be other parts of the same person,” Moss said of Friday’s find.

Investigators are also checking out a bag of bloody clothes found on the shoreline in Pompano Beach on Thursday, but Moss said Friday no determination has been made yet on that discovery.

Police say Laparra was last seen alive about 3 a.m. Sunday, but they would not say where he was seen.

His brother, Elvio Laparra, left him at the club El Mexicano late Saturday night.

When he didn’t come home Sunday, Elvio Laparra kept calling his cell phone but got no answer.

He spent two days checking hospitals for his brother.

On Wednesday, he heard a news story about dismembered remains found in two plastic bags in Biscayne Bay and the description: a white man with black, straight, medium-to-shoulder-length hair.

He called police.

“‘I don’t know what happened,” Elvio Laparra said Thursday morning, sitting in the apartment he shared with his brother and sister.

“I never should have left him in the club alone,” he said. “I just don’t understand why someone would kill him like that. He never really had problems with anyone.”