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Investigations
Wednesday, May 8, 2019
Vaping Company's Ads Under Fire

Vaping Company's Ads Under Fire

As more teens are vaping more than ever before, there's new scrutiny about the biggest player in the vaping game - Juul. Some say the company's latest advertisements may be making troubling medical claims. The I-Team found those claims have some health experts concerned. Investigative reporter Lolita Lopez explains for NBC4 News at 11 p.m. on Wednesday, May 8, 2019.

Investigations
Thursday, May 2, 2019
Facebook Slips on Fundraising Transparency

Facebook Slips on Fundraising Transparency

Does the money collected through Facebook's fundraising function actually make it to the organizations? Carolyn Johnson reports for the NBC4 News at 5 p.m. on Thursday, May 2, 2019.

Investigations
Tuesday, Apr 30, 2019
Parents and Children Using Exemptions to Opt Out of Vaccines

Parents and Children Using Exemptions to Opt Out of Vaccines

Even though there have been no measles cases connected to elementary or secondary schools in Southern California, information reviewed by the I-Team suggests there are more parents and children using certain exemptions to opt... Read More

Investigations
Monday, Apr 29, 2019
How to Get the Best Deal While Buying in Bulk

How to Get the Best Deal While Buying in Bulk

The NBC4 I-Team found that there's a number on the store shelf — staring us in the face — that is the key to getting the best deal while buying items in bulk. Read More

Investigations
Wednesday, May 1, 2019
Real or Counterfeit? How to Avoid Cannabis Product Impostors in LA

Real or Counterfeit? How to Avoid Cannabis Product Impostors in LA

Ever since California enacted tough regulations last year that banned pesticides and heavy metals from cannabis products, the counterfeit market has been booming. But it's not always easy for customers to tell the real thing from a... Read More

Investigations
Monday, Apr 29, 2019
Money-Saving Expert Shares Tips About Buying in Bulk

Money-Saving Expert Shares Tips About Buying in Bulk

Buying in bulk? Money-saving expert Andrea Woroch shares her tips so that you can get more bang for your buck.

Investigations
Monday, Apr 29, 2019
What Motivates People to Turn to Extremism?

What Motivates People to Turn to Extremism?

Two men are behind bars, both allegedly homegrown terrorists. Over the last several years, the NBC4 I-Team has tracked what motivates people to turn to extremism. Lolita Lopez reports for the NBC4 News on Monday, April 29, 2019.

Investigations
Monday, Apr 29, 2019
'Martyrdom, Bro': California Man Busted in Domestic Terror Plot

'Martyrdom, Bro': California Man Busted in Domestic Terror Plot

A U.S. Army veteran was plotting a large-scale terror attack in Los Angeles as revenge for the mass shooting at a mosque in New Zealand, according to an indictment unsealed Monday. Read More

Investigations
Friday, Apr 26, 2019
Mother in Torrance Demands Answers After Son Killed by Police

Mother in Torrance Demands Answers After Son Killed by Police

A mother made an emotional plea for justice in Torrance after her son was shot and killed by police in December. Eric Leonard reports for the NBC4 News at 6 p.m. on Friday, April 26, 2019.

Investigations
Friday, Apr 26, 2019
Health Officials Urge Public to Get Vaccinations

Health Officials Urge Public to Get Vaccinations

While the mayor in New York City has imposed fines for violating a mandate to get vaccinated in communities where the measles outbreak is severe, California has not issued any public health health orders. Lolita Lopez reports for the NBC4 News at 6 p.m. on Friday, April 26, 2019.

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
  • Dispute Over Signed 'Hamilton' Poster Triggers Lawsuit

    A dispute over a signed poster from the cast of "Hamilton" has triggered a $1 million lawsuit against the Kennedy Center by one of its managers. The wildly popular musical performed at the Kennedy Center in D.C.

  • Student Pushes for Planes to Carry Auto-Injectors

    A Chicago-area college student has mounted a one-woman campaign to equip airliners with potentially life-saving drugs, after an episode where she says she became ill after ingesting a nut on a flight from Boston to Chicago. “My...

  • Calif. Utility Found 250K Problems During Camp Fire Inspections

    Pacific Gas and Electric officials announced Wednesday that crews found 1,200 critical threats and took more than 250,000 corrective actions in response to post-Camp Fire safety inspections, leading to the permanent shutdown of the...

  • Man in Times Square Gun Case Feared 'Looney Tunes' Label

    A man has been under investigation by the New York FBI Joint Terrorism Task Force (JTTF) because he allegedly discussed wanting to set off an explosive device in Times Square, three law enforcement sources tell NBC 4 New York...

  • Delta Employees Say New Uniforms Are Giving Them Rashes

    Delta Air Lines employees are speaking out after they say the company’s new uniforms have given some of them rashes and breathing problems. The airline unveiled its new line of uniforms for its employees last May.

  • Common Police Field Tests Can’t Distinguish Between CBD, Pot

    The popularity of CBD products is on the rise, with an increasing number of state legislatures following a federal move to legalize marijuana’s hemp cousin. But the News4 I-Team has learned the field tests commonly used by...

More Top Investigations »

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