Subduing Suspects Face Down Isn’t Fatal, Research Has Said. Now the Research Is on Trial.

For years, the leading experts have testified that prone restraint by police is safe. So why do people keep dying?

Clara Birdlong, Identified 44 Years After Death, Was Most Likely Serial Killer’s Victim

The police say Samuel Little, who was in Jackson County, Miss., in 1977 and decades later confessed to more than 90 murders, is believed to have killed Ms. Birdlong.

Gabby Petito’s Death Ruled a Homicide, F.B.I. Confirms

The search continues for Brian Laundrie, Ms. Petito’s fiancé, who has been named a person of interest in the case.

‘Reopening Old Wounds’: When 9/11 Remains Are Identified, 20 Years Later

The medical examiner’s office is still working painstakingly to identify 9/11 victims. There are 1,106 victims whose remains have not been found.

Trail in Decades-Old Florida Killings Leads to Brazilian Man

Roberto Wagner Fernandes, who died in a plane crash in Paraguay in 2005, killed three women whose bodies were found in Miami and Broward County in 2000 and 2001, the authorities said.

Tulsa Massacre Survivors Ask Justice Dept. to Intervene in Search for Graves

Survivors of the 1921 massacre and descendants of victims said they did not trust city officials to search for the graves of Black residents who were killed by a white mob.

Parents Who Never Stopped Searching Reunite With Son Abducted 24 Years Ago

Guo Gangtang’s cross-country, decades-long search for his son inspired a movie. Now, there’s an ending fit for Hollywood.

Consuewella Africa, 67, Dies; Lost Two Daughters in MOVE Siege

One of the girls’ remains from a 1985 police attack are believed to have ended up in a cardboard box for use in a university forensics course, provoking outrage.

Two Montana Sweethearts Were Fatally Shot in 1956. The Case Was Just Solved.

The Cascade County Sheriff’s Office said it appeared to be the oldest homicide case in the United States to be solved with genetic genealogy.

China Still Buys American DNA Equipment for Xinjiang Despite Blocks

The U.S. government has long tried to prevent the sales over concerns about rights abuses and surveillance. Documents show those efforts have failed.

An Innocent Man Went to Prison for Murder. Now, It’s the Real Killer’s Turn.

Brian Leigh Dripps Sr. was sentenced to life in prison on Tuesday in the 1996 killing of Angie Dodge in Idaho, a crime for which Christopher Tapp was exonerated.

She Was Stabbed and Left in a Cornfield in 1972. Now There’s an Arrest.

Barry Lee Whelpley, now 76, was charged with killing Julie Ann Hanson, who was 15 when her body was found in Naperville, Ill., the authorities said.

Two New Laws Restrict Police Use of DNA Search Method

Maryland and Montana have passed the nation’s first laws limiting forensic genealogy, the method that found the Golden State Killer.

Two New Laws Restrict Police Use of DNA Search Method

Maryland and Montana have passed the nation’s first laws limiting forensic genealogy, the method that found the Golden State Killer.

Man Rescued in Colorado Mountain Pass Is Accused in 1982 Murders

Alan Lee Phillips was rescued from a snowdrift in 1982 after he signaled SOS with his headlights. The police now say he became trapped on the road after killing two women.

Australia Exhumes the Somerton Man, and His 70-Year Mystery

This week the police disinterred a body, found on a beach in 1948, that has puzzled investigators for decades. “There’s lots of twists and turns in this case, and every turn is pretty weird,” one said.

4 Years After an Execution, a Different Man’s DNA Is Found on the Murder Weapon

Lawyers’ request to conduct additional DNA testing before Ledell Lee was executed had been denied.