BBC: On This Day - 30 March 1979Car bomb kills Airey Neave
Shadow Northern Ireland Secretary Airey Neave has been killed by a car bomb as he left the House of Commons car park.
The bomb, said to be highly sophisticated, exploded as Mr Neave began driving up the exit ramp shortly before 1500GMT.
Emergency services were on the scene in minutes.
The 63-year-old Conservative MP, known for his tough line on anti-IRA security, was taken to Westminster Hospital where he died from his injuries.
So far two groups, the Provisional IRA and the Irish Natonal Liberation Army, have claimed they carried out the killing.
It is not yet known when the bomb was attached to his car but investigators believe a timing device and trembler - which detonates the bomb through movement - were used to ensure the bomb went off as Mr Neave was leaving the Commons.
The area around Parliament Square was immediately closed as police began a full-scale search of the premises.
Despite increased threats to the safety of MPs not all cars are checked fully as they enter the car park.
Gilbert Kellard, assistant commissioner of the Metropolitan Police said Mr Neave was aware of the dangers and was "happy and content" with his security.
Conservative leader Margaret Thatcher led tributes to Mr Neave saying: "He was one of freedom's warriors. Courageous, staunch, true. He lived for his beliefs and now he has died for them."
Prime Minister James Callaghan said: "No effort will be spared to bring the murderers to justice and to rid the United Kingdom of the scourge of terrorism."
The killing is thought to have been timed to coincide with the start of the election campaign which was announced yesterday.
Mr Neave was a close adviser to Mrs Thatcher, he led her campaign to become the Conservative Party leader and headed her private office.