Conservative MP Sir David Amess has died after being stabbed at his constituency surgery in Essex.
Police said a man was arrested on suspicion of murder after the stabbing at a church in Leigh-on-Sea.
They said they recovered a knife and were not looking for anyone else in connection to the incident.
Sir David, 69, had been an MP since 1983 and was married with five children.
While holding a constituency surgery at Belfairs Methodist Church in Leigh-on-Sea, Sir David was stabbed. An air ambulance arrived at the scene and Sir David was treated by emergency services workers, but sadly died.
Police were called to the scene shortly after 12.05 BST, where they arrested a 25-year-old man. Police are not currently looking for any other suspects. That man is currently in police custody and has been charged with murder.
Officers thanked the public who alerted them to the incident and are calling for anyone who might have CCTV of the local area to come forward.
What has the reaction been? Brendan Cox, whose wife MP Jo Cox was murdered by a constituent in 2016, said today’s killing “brought everything back”. Numerous MPs have paid tribute to Sir David.
Education Secretary Nadhim Zahawi said on Twitter: “Rest In Peace Sir David.
“You were a champion for animal welfare, the less fortunate, and the people of Southend West.
“You will be missed by many.”
A Conservative backbencher for nearly forty years, the 69-year-old father of five entered Parliament in 1983 as the MP for Basildon.
He achieved totemic status within the Tory party for holding the seat in 1992, but switched to nearby Southend West at the 1997 election.
Raised as a Roman Catholic, he was known politically as a social conservative and as a prominent campaigner against abortion and on animal welfare issues.
He was also known for his championing of Southend, including a long-running campaign to win city status for the town.