Investigation Around San Diego Mosque Shooting Continues // TRAIN BRAIN

Investigation Around San Diego Mosque Shooting Continues

Investigators are now digging into the backgrounds of the two teenage gunmen who shot and killed 3 men at a San Diego mosque. Authorities say they had an arsenal of weapons at their disposal. NBC News national correspondent Morgan Chesky reports for TODAY.

TODAY

TODAY brings you the latest headlines and expert tips on parenting, food, home, style, and health and wellness....

Craig Melvin on being restless

Savannah Sellers Is Mentioned in Simon Sits' New Book!

Craig Melvin on Unity

Al Roker Wears His Beret with John Travolta

Colin Jost Recounts 'SNL' Finale

Savannah Guthrie Spots John Travolta At the TODAY Show

John Travolta and Ella Bleu Travolta React to 1977 Interview on TODAY

Craig Melvin on Veritas, Unitas. Caritas

Craig Melvin on his Crafting his Commencement Speech

John Travolta on Working with Daughter Ella Bleu Travolta in Directorial Debut

See the Trailer for New Jimmy Stewart Biopic, ‘Jimmy’

Shonda Rhimes and Ellen Pompeo Team Up for 'Grey's' Spinoff

American Doctor Who Tested Positive for Ebola Evacuated to Berlin for Emergency Care

Republican Primary Election Results Demonstrate Trump's Grip on GOP

‘Propeller One-Way Night Coach’ Cast on Honoring Travolta Family

New Video Shows Engine Fall From UPS Plane Before Crash

Record Heat Brings Summer-Like Temperatures Across East Coast

‘SimonSits’ Creator Isabel Klee on New Memoir, Rescuing Dogs

Record Heat Brings Summer Temperatures to East Coast

Tips for a Successful Yard Sale: What to Sell, Pricing, Resale Sites

Colin Jost Talks ‘Breadwinner,’ Almost Shaving Head During ‘SNL’

What Are Peptides and Should They Go Into Your Daily Routine?

How to Stay Safe When Swimming This Summer

John and Ella Bleu Travolta Talk Working Together in New Film

Cher Turns 80! Look Back at Her Remarkable Life and Career

John Travolta Explains His New Style

Woman Plunges to Her Death Down an Uncovered NYC Manhole

Investigation Around San Diego Mosque Shooting Continues

Experts Say Summer 2026 Could Be a Busy Season for Sharks

Former Cuban President Raúl Castro to Be Indicted by US

WHO Sounds the Alarm on Potential Spread of Ebola Outbreak

New Details Emerge About San Diego Mosque Shooters

Who Benefits From Trump's $1.8B 'Anti-Weaponization' Fund?

Trump Wins Big as His Endorsements Score Victories in Primaries

Woman Falls to Her Death Down an Uncovered NYC Manhole

Billy Eichner Says Audio Memoir is a "Love Letter" to His Late Parents

Henry Winkler Commencement Speech at Emerson College

Mellody Hobson on Why George Lucas Made Yoda Talk Backwards

Billy Eichner Reacts to His Adorable Childhood Headshots

Richie Sambora Sings ‘Livin’ on a Prayer’ at Daughter’s Wedding

This 30-Second Habit Boosts Mood, Energy and Metabolism

Chef José Andrés on TODAY

Dolph Lundgren Passes the Power Sword to Nicholas Galitzine

Mellody Hobson on Why Husband George Lucas Gave Yoda his Backwards Speech Pattern

These Designers Use Fashion to Celebrate Girls With Disabilities

How Can GLP-1s Affect Mood?

How Women Can Prioritize Health — and What to Check Annually

See Hal Jordan’s Green Lantern Suit in New ‘Lanterns’ Trailer

Zach Galifianakis to Star in ‘Very Young Frankenstein’ Series

Billy Eichner Shares His Origin Story in New Memoir, 'Billy on Billy'

Jackson Pollock Painting Sells for a Record-Breaking $181m at Christie's Auction

Jason Derulo is "Super Happy" to See Haiti in the World Cup

Ex-Assistant Principal Faces Trial Over Teacher Shot by 6‑Year‑Old

What is ‘Ozempic Personality?' Patients Report Loss of Joy

LIRR Service to Resume After MTA and Union Leaders Reach Deal

Teen Gunmen Open Fire in San Diego Mosque, Killing 3

Restaurant Chains Go Retro as Customers Crave Nostalgia

LIRR Service to Resume After MTA and Union Leaders Reach Deal

American Doctor Tests Positive for Ebola While Working in Congo

Teenage Gunmen Open Fire on San Diego Mosque, Killing 3 Men and Themselves

All Eyes on Key State Primaries; Trump Settles $10B IRS Lawsuit

More Storms Sweep Across Midwest as Record Heat Spreads East

Mellody Hobson #1 Money Rule: 'Just Get Started' | Glass Half Full With Craig Melvin

Henry Winkler Commencement Speech

Zara Larsson's Bodega Order

Tom Brady Praises Former Patriots Teammate Danny Amendola in Georgetown Commencement Speech

Dietitian Joy Bauer's 6 Favorite High-Protein + High-Fiber Snacks

1 Simple Trick to Eat More Protein, According to a Dietitian

Ab Workout: 6 Deep Core Exercises to Add to Your Routine

Cleaning Tips for Your Suitcase, Trashcan, Hairbrush, and More

Henry Winkler 2026 Commencement Speech at Emerson College

Tom Brady Georgetown Commencement Speech

John Travolta Gets Surprise Honorary Palme d’Or at Cannes

Ella Langley and Cody Johnson Win Big at 2026 ACM Awards

Navy Jets Collide During Idaho Air Show

Delta CEO Ed Bastian on Why the Company Will Stop Serving Snacks on Short Flights

Kate Hudson and Reese Witherspoon Celebrate Kids’ Graduations

Comedian Nate Bargatze on his new theme park "Nateland"

What the Primary Results Signal About November Midterms

Chaos Erupts at Swatch Stores as Customers Line Up for Newest Collection