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Investigations
Friday, Aug 23, 2019
One-Time Officer Sentenced in Decades-Old Murder

One-Time Officer Sentenced in Decades-Old Murder

A one-time police officer has been sentenced for the decades-old murder of a man in Hollywood. Eric Leonard reports for the NBC4 News on Friday, Aug. 23, 2019.

Investigations
Friday, Aug 23, 2019
Los Angeles Homeless Illegally Use Fire Hydrants to Fill Water Balloons, Bathe, Shave

Los Angeles Homeless Illegally Use Fire Hydrants to Fill Water Balloons, Bathe, Shave

Homeless people across Los Angeles are illegally using fire hydrants as a source of water to bathe, shave, even fill water balloons, leaving the hydrants damaged and often useless to firefighters during the critical fire season, an... Read More

Investigations
Thursday, Aug 22, 2019
Regulations on Guard Rails on Windows

Regulations on Guard Rails on Windows

A young girl remains in grave condition days after she fell out of a window of an apartment building. Lolita Lopez reports for the NBC4 News at 4 p.m. on Thursday, Aug. 22, 2019.

Investigations
Monday, Aug 19, 2019
SoCal School District Tests New 911 Emergency App

SoCal School District Tests New 911 Emergency App

Columbine, Sandy Hook, Parkland. These horrors left children and teachers killed in senseless school shootings. Preventing another mass killing has become a critical part of safety plans at schools across the country. Read More

Investigations
Monday, Aug 19, 2019
Fired Deputy Who Was Rehired by Sheriff Villanueva is Ordered to Give Up His Badge and Gun

Fired Deputy Who Was Rehired by Sheriff Villanueva is Ordered to Give Up His Badge and Gun

A former Los Angeles County Sheriff’s deputy reinstated by Sheriff Alex Villanueva was ordered by a judge Monday to surrender his badge, uniform, and gun, and not to, "hold himself out as a Los Angeles Deputy Sheriff.” Read More

Investigations
Wednesday, Aug 14, 2019
Trump Takes on Voting in Los Angeles County

Trump Takes on Voting in Los Angeles County

President Donald Trump has repeatedly questioned the voting system, and last night, he took aim at Los Angeles County. Lolita Lopez reports for the NBC4 News on Wednesday, Aug. 14, 2019.

Investigations
Wednesday, Aug 14, 2019
Some Say SoCal Chiropractic Business Is 'Selling False Hope'

Some Say SoCal Chiropractic Business Is 'Selling False Hope'

Some consumers have reached out to the NBC4 I-Team accusing "Optimal Health/Straw Chiropractic" of preying on their declining health – charging them thousands of dollars for treatment they feel is bogus. Read More

Investigations
Wednesday, Aug 14, 2019
Assault-Style Rifle Used in CHP Shooting Was 'Ghost Gun'

Assault-Style Rifle Used in CHP Shooting Was 'Ghost Gun'

The semi-automatic assault-style rifle that authorities say was used by an Riverside County ex-con to shoot three California Highway Patrol Officers — one of them fatally — was constructed using parts that allowed him to skirt the... Read More

Investigations
Tuesday, Aug 13, 2019
County Mulls Restructuring Juvenile Justice System

County Mulls Restructuring Juvenile Justice System

Saying that some 90% of juveniles in custody in Los Angeles County have a mental health case, county supervisors are studying ways to provide better rehab and mental health services. Lolita Lopez reports for the NBC4 News on Tuesday, Aug. 13, 2019.

Investigations
Tuesday, Aug 13, 2019
Charges Against Former LAPD Commander Dismissed

Charges Against Former LAPD Commander Dismissed

Criminal charges were dismissed this week against former Los Angeles Police Department Commander Nicole Mehringer, who was accused of being drunk in public following a traffic incident in Glendale. Read More

Sex and Drugs at LA Libraries


An NBC4 undercover investigation exposes illegal activity at LA libraries.

Fake Reviews


If you rely on online reviews to pick restaurants, businesses and services, beware: the reviewers you're depending on may be fake.

LA's Nuclear Secret


Years of mishandling dangerous radioactive materials and chemicals has also left a toxic legacy for generations of people living near the Santa Susana Field Laboratory.

Top Investigations
  • An Old Pipe Caused a Massive Blast. Then Came the Acid Leak

    Thousands of pounds of deadly hydrofluoric acid escaped into the atmosphere following the massive June 21 blast at the now-shuttered gas refinery in South Philadelphia, according to a new federal report.

  • California Regulator Orders PG&E to Fix Power Shutoff Plan

    The head of California's Public Utilities Commission on Monday ordered PG&E to revamp its power shutdown program to avoid the kind of chaos and breakdowns that were evident in last week’s planned blackouts. The power shutdown...

  • Elder Abuse Cases Likely to Remain 'Open' Investigations

    Every year more than 9,000 cases of elder abuse are reported in San Diego County and data shows the crime is often underreported and difficult to fight in court, leaving a majority of cases "open" investigations. Experts...

  • ICE Agents Violate Rules That Protect Immigrant Vets

    Even though the Immigration and Customs Enforcement Agency has policies in place that can protect immigrant U.S. veterans from deportation, NBC Bay Area’s Investigative Unit has learned that ICE officials have not regularly...

  • Delta Employee Arrested in $250,000 Heist at JFK Airport

    A Delta Airlines employee has been arrested in connection with the case of $250,000 in cash that apparently vanished from John F. Kennedy Airport as it was being transferred onto one of the airline's flights en route to Florida, a...

  • Brain Exams Aim to Predict Violent Behavior, Stop Killers

    Cutting-edge research is revealing new ways to potentially prevent violent acts, including mass shootings, years before the thought of violence ever crosses the minds of murderers. A study of roughly 1,000 prisoners revealed...

More Top Investigations »

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Car Chases
Car Chases
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