This was a premeditated, well-executed attack

Harald Schenker, OSCE

Government ministers immediately blamed the rebels, who in turn accused the Macedonians of blasting the church, built inside a 14th century monastery, in an attempt to discredit them.

But observers say that whoever is ultimately responsible, the attack was designed to undermine an already fragile ceasefire as the country struggles to find peace.

Shattered identities

The BBC's Jeremy Bowen says the Macedonians see the destruction of the church as a direct attack on their religion, culture and identity.

Next to the church is the grave of Kyril Pejcinovik, the father of the modern Macedonian language, adding particular symbolism to the site.

Highly symbolic

"This just confirms the anti-historical mental make-up of the Albanian terrorists and historically locates them in the period of savages when simply nothing sacred existed," said the interior ministry in a statement.

The minister for culture, Ganka Samoilova-Cvetnovska, compared the act to the destruction of ancient Buddha statues by the Taleban in Afghanistan.

Precedents

But the destruction of religious sites by ethnic Albanians has not been a feature of the conflict in Macedonia as it was during the war in Kosovo, when dozens of Serb Orthodox sites were targeted.

Members of both communities have fled

In recent months the religious sites damaged in Macedonia have belonged to the ethnic Albanian community.

Earlier this month, Macedonians set fire to a mosque in the southern town of Prilep after 10 of their soldiers were killed, say international officials.

Observers from the European security body, the OSCE, are now investigating the Lesok blast.

"This would be the first destruction of a religious site here on the part of the ethnic Albanians if they are found responsible," said Harald Schenker, spokesman for the OSCE mission to Macedonia.

"Whoever it was, this was a premeditated, well-executed attack," he told BBC News Online.

Just 15 Macedonians remain in Lesok. As in other villages and towns across the country, their inhabitants have fled.