An MP violently assassinated in the line of duty in his constituency, in Leigh-on-Sea, 60 km east of London.
According to the British counterterrorism services, it is an attack.
The 25-year-old assailant was immediately arrested.
He is still being questioned.
The whole country, in shock, mourns the disappearance of David Amess.
"Sometimes there are no words", one of the messages left at the foot of the church in Belfairs.
Flowers, a heart-shaped balloon in remembrance of David Amess.
The Conservative MP lost his life on Friday in this modern red brick building.
He received more than a dozen stab wounds, police said.
The features drawn, Prime Minister Boris Johnson holds a bouquet of white flowers in his hands.
He is surrounded by Home Secretary Priti Patel and opposition leader Keir Starmer, the leader of the Labor Party.
Visibly moved, the Home Secretary said: “We all find it difficult to accept the fact that David Amess has been taken from us so cruelly.
He was a man of the people, he was absolutely there for everyone, he was a very appreciated parliamentarian, for me he was a dear and loyal friend.
A few minutes after the announcement of the death of the 69-year-old MP, Boris Johnson said he was "in shock and his heart filled with emotion".
All our hearts are full of shock and sadness at the death of Sir David Amess MP.
He was one of the kindest, nicest, most gentle people in politics.
- Boris Johnson (@BorisJohnson) October 15, 2021
Next to the security cordon that surrounds the church, the public came to pay homage to the deputy, elected for 38 years.
A resident, in tears, remembers her first meeting with the parliamentarian when she was 12 years old.
He was visiting his school.
“He was proud to be accessible… He knew the names of all the principals of all the schools in his riding.
My 13 year old daughter loved it.
David Amess, also greeted by his fervent opponents.
He was a practicing Catholic.
Among its struggles, the fight against abortion.
A feminist, Patsy Stevenson, wrote on Twitter: “I am devastated.
He was a springboard in my activism.
He was always a nice man, he always answered my letters.
We didn't always agree, but he was polite in our discussions.
I'm devastated to hear about Sir David Amess.
He was a stepping stone in my activism as a young adult, he was a kind man and always responded to my letters.
We didn't always agree but he was polite in our debates.
My condolences and thoughts to his loved ones.
- Patsy Stevenson (@PatsyeStevenson) October 16, 2021
For Conservative MP Pauline Latham, “it's scary that we are not safe, we live in a democratic country, we are democratically elected and we are here to serve the people.
David did it to the best of his ability ”.
After the emotion, it's time for debate.
Tomorrow, Members return to Parliament.
The session will open on the security of MPs in the country.
New protection measures could be announced.
Some elected officials fear that they will keep them away from the population.
Relatives of David Amess confide that he would have "hated" to lose contact with his constituents.
House of Commons Speaker Lindsay Hoyle warns against "rushed reactions."