Celebrities took to Twitter after yesterday's (October 31) fatal attack in New York.

The attack during Halloween, left 8 people dead and 12 injured after a rental truck plowed through a bike lane and into a crowd in Lower Manhattan. The 29-year-old driver, Sayfullo Saipov, who shouted "Allahu Akbar," was shot and taken into custody. Authorities are treating the incident as an Isis Islamic attack. 

After hearing the news, celebrities took to Twitter to send their thoughts and prayers to New Yorkers, calling the deadly crash "cowardly" and "the worst of mankind".

The following are some of their tweets:

"Michelle and I are thinking of the victims of today's attack in NYC and everyone who keeps us safe. New Yorkers are as tough as they come." - Barack Obama

"I ❤️ NY" - Ellen DeGeneres

"Devastated for the victims and their families tonight & inspired by the spirit of this city." - Josh Groban

"Always #NYCStrong. I love the people of New York. My heart breaks for the people impacted by today's attack." - Common

"New York don't cower or give up the power - city so tall where the apple don't fall - forever. And ever." - Comedian Denis Leary

"Terror attack in NYC, not far from 9/11. Deepest condolences to the families of those murdered; and those involved who are scarred forever." - Bette Midler 

"New York. My heart is with you always and forever. Devastating news. My soul and heart is with the victims and there loved ones x horrific." - Sam Smith

"My heart is with you NYC." - Lea Michelle

"God bless you New York. You are a strong, vibrant, multicultural city and nothing will ever bring you down! My heart is with you!" - Boy George

"Sending love to NYC on this tragic + heartbreaking day." - Jared Leto

"A cowardly act." - Ryan Seacrest

"Jesus the world is a scary place right now." - Bethenny Frankel

"God Bless the NYPD." - Charlie Puth 

Despite everything, in true New Yorkan spirit, New York City's annual Halloween parade marched on that night as always, amid heavy security.