After more than three decades with the Dallas Police Department, Chief of Police David O. Brown announced his retirement Thursday, ending a six-year tenure.

Here is a look at a timeline of events on the investigation into Jennifer Dulos’s disappearance.

The reward for information leading to a 5-year-old New Jersey girl climbed to $35,000 Friday as a search that involved more than one hundred local and federal officers failed to turn up the missing child.

The grandmother of a 5-year-old girl now missing for the last 72 hours from a park in Bridgeton, New Jersey, pleaded for the public’s help Thursday.

An Amber Alert has been issued for a young girl who was taken while visiting a South Jersey park.

A man accused of murdering a 19-year-old University of Illinois-Chicago student in a campus parking garage allegedly killed her because she ignored his catcalls.

A man is facing first degree murder charges in connection with the death of 19-year-old University of Illinois-Chicago student Ruth George, university police say.

Christian Castro speaks to NBC 6 after home cameras captured a Sweetwater cop punching him when cops swarmed a Tamiami home in search for his brother, James Castro. NBC 6 anchor Johnny Archer reports.

After bloody race riots rocked China’s far west a decade ago, the ruling Communist Party turned to a rare figure in their ranks to restore order: a Han Chinese official fluent in Uighur, the language of the local Turkic Muslim minority. Now, newly revealed, confidential documents show that the official, Zhu Hailun, played a key role in planning and executing...

A police officer was fatally shot and another was wounded while responding to a home invasion on Detroit’s West Side, authorities announced late Wednesday. The officers were searching the home for a suspect when they were shot, Police Chief James Craig said. An 18-year veteran of Detroit Police was shot in the neck with a high-powered rifle, Craig said. The...

Town of Palm Beach Chief Nicholas Castro addressed the concerns of residents and members of a gun rights advocacy group during a meeting this week, telling NBC affiliate WPTV-TV that it was “irresponsible” for the group Florida Carry Inc. to hold demonstrations at a bridge in the city

A Bay Area prosecutor used his 13-year-old daughter to lure a man back to the spot where she said he had molested her, so the man’s incriminating actions could be recorded on video, according to a newspaper report Sunday.

The former president of a private tennis club in Texas has pleaded guilty in the college admissions scandal. Martin Fox entered the plea in Boston’s federal court Friday. The 62-year-old from Houston had previously agreed to plead guilty to a racketeering conspiracy charge in a deal with prosecutors.

Police in D.C. and Montgomery County say they have arrested the Potomac River Rapist who killed a D.C. intern and raped nine women over the course of seven years in the 1990s.

Authorities in New Jersey say a pizza delivery driver killed his mother then stuffed her body in a chest and left it in his car while he used her car to work.

Police have arrested the suspect in a fatal stabbing at a Popeyes restaurant in Oxon Hill, Maryland.

Jane Castor, who spent over 30 years with the Tampa Police Department that included the last six as chief, called the department’s communication office and officers were sent to the scene.

A Philadelphia father is accused of using his 11-month-old son as a “human shield” while trying to buy drugs with counterfeit money just prior to a shooting that left the boy critically injured last month.

Police identified the suspect, who remains at large, in a fatal stabbing at a Popeyes restaurant in Oxon Hill, Maryland, last week.

An Oklahoma police chief was killed during an altercation with one of his own officers while at a conference in Florida Sunday, NBC News reports. Escambia County Sheriff’s deputies responded to a report of a physical altercation at the Hilton Garden Inn in Pensacola Beach Sunday evening and found Mannford Police Chief Lucky Miller dead, according to NBC affiliate KJRH....