Yeshiva Students Stabbed

This tragic story is terribly sad:

A massive police manhunt was underway Thursday for an Arab man who stabbed 21-year-old British yeshiva student Shmuel Mat to death and seriously wounded a classmate with a large kitchen knife in a terror attack in Jerusalem's Old City.

...The two victims of the stabbing attack, who studied at the city's Mir Yeshiva, were rushed by Magen David Adom paramedics to Hadassah University Hospital at Ein Karem and Jerusalem's Sha'are Tzedek Hospital.

Mat died on the operating table in the intensive care unit of Hadassah Hospital just over an hour later, having never regained consciousness.

Mat came to Jerusalem from Britain to study about a year and a half ago. Rabbi Binyamin Carlebach, head of the Mir Yeshiva, related that he would get up every morning at 4:00 to study. He was engaged several months ago and was planning to marry in three months.

There's another facet to the story, though, that I found a bit upsetting as well:

Meanwhile, several hundred haredim damaged a private ambulance outside Jerusalem's Hadassah Hospital at Ein Karem early Thursday, after thinking that police were planning on transferring Mat's body to a morgue for an autopsy, police said.

Police dispersed them from the area and arrested four suspects. Three policemen were injured in the incident.

Is there a halachik basis for damaging property and injuring people to prevent an autopsy from taking place? I'm not saying there isn't, though I'd be surprised.