Vandals have caused damage put at more than £1,000 to the DUP leader Ian Paisley's church in east Belfast.
Ian Paisley said it was the latest in a series of attacks
Twelve windows were smashed at the Martyrs' Memorial Free Presbyterian church on Ravenhill Road. The attack was discovered by the church caretaker.
Mr Paisley said it was the latest in a series of attacks on the church and said the police had been "totally unable" to safeguard the building.
"These attacks have now become a very serious matter," said Mr Paisley.
Mr Paisley, who is the Free Presbyterian Moderator, said that a number of months ago almost £11,000 worth of damage was caused to the windows of the church.
"Continually, from that time, there have been windows shattered.
"Today we counted fourteen windows shot through. One of these was a heavy security window in my office.
"So far the police have been totally unable to safeguard the building or prevent these attacks. The press have failed to report them.
"On one of these occasions paint was thrown at the gates. Obscene lettering was placed on the pillars of the church."
Mr Paisley said he had informed the local police and the assistant chief constable for Belfast.
Sinn Fein assembly member Alex Maskey condemned the attack on the church.
"Those of us in political and community leadership need to make it very clear that this sort of activity must end and end now," the South Belfast MLA said.