Stars across film, TV, music and other media took to Twitter their thoughts and prayers to the city of Nice, France following a deadly truck crash in the city on Thursday.

The truck plowed into a crowd in the French city on Thursday night during a Bastille Day celebration, leaving 73 dead and as many as 100 people injured. French officials reported soon after the attack that the truck driver had been neutralized.

“I’m so sorry for all that is happening, Nice,” Michaela Watkins, the star of Hulu’s “Casual,” wrote on Twitter. “We are grieving with you. We are worried with you. We love you. #PrayForNice.”

Also Read: Dozens Dead, Injured in France During Bastille Day Celebration (Updating)

The musical duo Disclosure had just left Nice.

“Thoughts with everyone affected by the horrific scenes in Nice, France. We were just there this morning.. Can’t believe it!” the group tweeted.

The attack struck close to home for Christina Milian, who said her family was supposed to be in France today.

“So saddened right now. #PrayForNice,” she wrote. “My family was suppose to be there today. Thank God they’re safe. Nice I am praying for you.”

Also Read: French Officials: Fire at Eiffel Tower 'Accidental,' Not Connected to Nice

Presumptive Republican presidential nominee Donald Trump wrote on Twitter that he would be postponing the announcement of his pick for vice presidential running mate, which had been expected to come on Friday morning.

“Another horrific attack, this time in Nice, France.” he wrote. “Many dead and injured. When will we learn? It is only getting worse.”

See more reactions below:

Another horrific attack, this time in Nice, France. Many dead and injured. When will we learn? It is only getting worse.

— Donald J. Trump (@realDonaldTrump) July 14, 2016

I really just don't understand the world right now. It's unnerving. What other choice but to just have hope that good will prevail..

— Grant Gustin (@grantgust) July 14, 2016

Sending love to friends in France #Nice

— mia farrow (@MiaFarrow) July 14, 2016

This world is becoming very dark very quickly. #prayfornice

— Gregg Sulkin (@greggsulkin) July 14, 2016

Nice, France ????????

— Jack Falahee (@RestingPlatypus) July 14, 2016

I'm so sorry for all that is happening, Nice. We are grieving with you. We are worried with you. We love you. #PrayForNice

— Michaela Watkins (@michaelaWat) July 14, 2016

Pray for Nice. Pray for France. Pray for our world ❤️ my heart is broken

— Ariel Winter (@arielwinter1) July 14, 2016

Correction: 30 dead and 100 injured in Nice. My heart is heavy. The people responsible for this are cowards.

— Jamie Chung (@jamiechung1) July 14, 2016

Thoughts with everyone affected by the horrific scenes in Nice, France. We were just there this morning.. Can't believe it! ????????☮❤️????

— Disclosure (@disclosure) July 14, 2016

So sad, and so tragic, my heart goes out to the people of Nice ????

— Devonté Hynes (@devhynes) July 14, 2016

So saddened right now. #PrayForNice my family was suppose to be there today. Thank God they're safe. Nice I am praying for you

— Christina Milian (@ChristinaMilian) July 14, 2016