“He (Amess) was treated by emergency services but, sadly, died at the scene,” police said.
David Amess, who represents Southend West in Essex, eastern England, was stabbed by a man who walked into his constituency meeting at a Methodist Church.
“A 25-year-old man was quickly arrested after officers arrived at the scene on suspicion of murder and a knife was recovered.”
Amess’s office confirmed he had been stabbed but gave no further details.
Amess was first elected to parliament to represent Basildon in 1983, and then stood for election in Southend West in 1997.
His website lists his main interests are “animal welfare and pro-life issues.”
The stabbing at Amess’ meeting with constituents has echoes of a 2010 case when Labour lawmaker Stephen Timms survived a stabbing in his constituency office, and the 2016 fatal shooting of Labour’s Jo Cox just days before the Brexit referendum.