LEIGH-ON-SEA, England — For the second time in little more than five years, a British lawmaker meeting with constituents was killed in full view of the public, this time in a genteel seaside town, where the victim, a Conservative Party member of Parliament, was fatally stabbed on Friday inside a church.
The attack, which the authorities declared a terrorist attack early Saturday, stunned Britain’s political establishment, raising questions about the security of lawmakers at a time when the country is already on edge, unnerved by shortages of food and fuel, and frayed by a political culture that has become increasingly raw and combative in the aftermath of Brexit.
“The early investigation has revealed a potential motivation linked to Islamist extremism,” the police said.
The lawmaker, David Amess, 69, was a long-serving member of the House of Commons known for his soft-spoken manner and hard-line views on Brexit. He was engaged in the everyday political routine of meeting with constituents when the attack occurred in Leigh-on-Sea, on the mouth of the Thames, about 40 miles east of London.
a right-wing extremist targeted her outside a meeting with constituents.
In 2010, another Labour lawmaker, Stephen Timms, was stabbed twice in the abdomen by an Islamist extremist, but survived.
Photographs taken at the scene showed a number of emergency responders and a cordoned-off area around the church. The police said that officers had responded to reports of a stabbing shortly after 12:05 p.m., and that Mr. Amess had died at the scene.