Mayor Bill de Blasio said Thursday “something doesn’t fit” about Jeffrey Epstein’s death, contradicting the city’s own medical examiner whose office determined the serial pedophile committed suicide.

“I still stand by something doesn’t fit here,” de Blasio said at an unrelated press conference when asked about reports that a former city coroner — who was hired by Epstein’s brother — insisted his death was a homicide.

“It just doesn’t make sense that the highest profile prisoner in America, you know, someone forgot to guard him,” Hizzoner added.

“I want to understand — I think everyone wants to understand what really happened. I don’t know what the nature of the death was, I just know it should never have happened and we still don’t have good answer,” he said.

On Wednesday, forensic pathologist Dr. Michael Baden, who served as the city’s chief medical examiner in the 1970s, claimed “the evidence points toward homicide rather than suicide.”

But the city’s current ME, Barbara Sampson, stood by by her original determination.

“Our investigation concluded that the cause of Mr. Epstein’s death was hanging and the manner of death was suicide,” Sampson said in a statement.

The 66-year-old Epstein was found hanged in his cell at Manhattan’s Metropolitan Correctional Center in August.

Shortly after the incident de Blasio jumped into the frenzy of conspiracy theories swirling around Epstein’s death.

“It’s just too convenient. It’s too many pieces happening simultaneously that don’t fit,” the mayor said in August.

Later in the day, City Hall said they “stand by the medical examiner’s findings” despite concerns over Epstein’s time in prison.

“As the Mayor said himself, there are outstanding questions surrounding how closely Epstein was surveilled while in custody,” the statement read.

“We hope the pending federal investigation sheds light on these concerns.”