On Thursday Bulgaria remembers what has remained in history as the deadliest-ever terror attack the country has experienced.

Dozens of people lost their lives in a bomb attempt on the entire Bulgarian government during a service at the Sveta Neledya Church in Bulgaria's capital Sofia.

On April 16, 1925, a group organized by the Bulgarian Communist Party (BKP) blew up the roof of the Sveta Nedelya.

The assault took place during the funeral service of General Konstantin Georgiev, who had been killed in a previous Communist assault on 14 April.

Metropolitan Bishop Stefan had just started to read the gospels when a bomb went off.

As many as 150 people, mainly from the country's political and military elite, were killed in the attack and around 500 were injured. One of the church's domes was blown high up into the air.

More army generals were killed during the attack than it most of the wars that had been led by Bulgaria since it gained independence in 1878.

By chance, all government members survived. The monarch, Tsar Boris III, was not in the church, as he was attending the funerals of those killed in the attempt on his own life in the Arabakonak pass in Stara Planina.

The preparation of the attack, which was the brainchild of Dimitar Hadzhidimitrov-Mitreto, had taken four months, with "Mitreto" arguing the bomb should take the lives of "the entire fascist scum".

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