Conservative MP Sir David Amess stabbed to death
Conservative MP Sir David Amess has died after being stabbed at his constituency surgery in Essex.
Police said a 25-year-old man was arrested on suspicion of murder after the attack at a church in Leigh-on-Sea.
They said they recovered a knife and were not looking for anyone else in connection with the incident.
Sir David, 69, had been an MP since 1983 and was married with five children.
Health Secretary Sajid Javid said he was "a great man, a great friend, and a great MP, killed while fulfilling his democratic role".
Chancellor Rishi Sunak said: "The worst aspect of violence is its inhumanity. It steals joy from the world and can take from us that which we love the most.
"Today it took a father, a husband, and a respected colleague. All my thoughts and prayers are with Sir David's loved ones."
Sir David, who represented Southend West, was holding a constituency surgery - where voters can meet their MP and discuss concerns - at Belfairs Methodist Church in Eastwood Road North.
Essex Police said they received reports of a stabbing shortly after 12:05 BST and found a man injured.
He was treated by emergency services but died at the scene.
Sir David is the second sitting MP to be killed in the last five years, following the murder of Labour MP Jo Cox in 2016.
She was killed outside a library in Birstall, West Yorkshire, where she was due to hold a constituency surgery.
Southend councillor John Lamb told the BBC that Sir David moved his surgeries to different locations around the constituency "to meet the people" and said the attack was "absolutely dreadful".
"We've lost a very good, hard working constituency MP who worked for everyone," he said.
"It didn't matter who you were, it didn't matter about your religion or your culture. If you had a problem he would work for you."
Speaker of the House of Commons Sir Lindsay Hoyle said: "This is an incident that will send shockwaves across the parliamentary community and the whole country."
He said he was shocked and deeply distressed by the killing of a "lovely man", and said in the coming days they would need to examine MPs' security.
Labour London Mayor Sadiq Khan said he was "deeply, deeply saddened" and described Sir David as "a great public servant".
Liberal Democrat leader Sir Ed Davey said it was "a truly terrible day for British politics but most importantly of all our prayers are with all the people who loved David".