The stars flocked to social media to send their love

Niall Horan, Holly Willoughby and Vicky Pattison were among the many celebrities who took to social media to pay tribute to victims of the horrifying terror attack in London on Wednesday (22nd March).

Three people were killed and at least 40 people have been injured after a car mowed down pedestrians on Westminster Bridge.

Policeman, Keith Palmer was later fatally stabbed outside the Houses of Parliament before the attacker himself was shot and killed.

Police activity on Whitehall after terrorist attack which saw police officer Keith Palmer and three members of the public left dead [PA images].

As the terrifying news broke, celebrities joined the rest of the world in shock and flocked to social media to send their love to the victims of the incident, with One Direction star Niall tweeting: ‘Thinking of London this morning from LA. Stay safe everyone!!’

Read: All the Latest Celebrity News 

Susanna Reid also posted an emotional message to those effected while praising the emergency services for their ‘brave work’.

The Good Morning Britain presenter tweeted: ‘My heart totally goes out to those hurt & affected by this awful event at Westminster. Dreadful. Upsetting. And in the aftermath of this attack, our extraordinary emergency services doing incredibly brave & difficult work.’

Before adding: ‘Full-strength to the medical staff who’ll be at full  stretch at St Thomas’ Hospital A&E dept which is next to Westminster Bridge.’

Fellow ITV presenter, Phillip Schofield also tweeted during the breaking news and wrote: ‘Watching the news and sending so much love to anyone caught up in this atrocity #London,’while This Morning co-star, Holly Willoughby simply wrote: ‘Just in such shock at what happened today… ‪#Westminster.’

And reality star Vicky Pattison shared a photo of the word ‘love’ on Instagram along with the caption: ‘I see humans… But no humanity… London, all you brave and incredible people, I’m thinking of you and sending love. My heart is breaking over the events of the day.’

Love Islander, Kady McDermott shared a strong message with her followers which read: ‘What is the world coming to? My thoughts and prayers go out to everyone to whom this has effected. Stay safe beautiful London this will not beat us #PrayForLondon #WeAreNotAfraid #F***Terrorism.’

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And new dad Marvin Humes posted a moving picture of the Houses of Parliament as he wrote: ‘My thoughts and prayers go out to anyone affected by today’s events in Westminster.

‘It’s a very cruel world we live in sometimes, however at times like this everyone pulling together to help out in what can only be unimaginable circumstances displays such courage, strength and unity. Big respect to our emergency services and anyone that lent a helping hand.’

Such terrible news – sending our love to everyone involved.