The 69-year-old lawmaker is receiving treatment at the scene. His condition is unclear.

"A man's been arrested following an incident in #LeighonSea. We were called to reports of a stabbing in Eastwood Rd North shortly after 12.05pm. A man was arrested shortly after & we're not looking for anyone else," the Essex Police wrote on Twitter.

"Sadly, a man later died. A man was arrested at the scene. We are not looking for anyone else," it added.