Published Saturday, 14 December 2013
Police outside the Lisburn office of the Alliance Party. (© UTV)
It had been thought that petrol was poured through the shutters of the building in the Graham Gardens area of the Co Antrim city at around 6am, but did not properly light.
However, following further enquiries, police now think a "pipe-type explosive device" was the cause of the damage. They have appealed for information.
Alliance representative Trevor Lunn condemned those responsible for the attack on his office.
The Lagan Valley MLA said: "This is an attack on democracy. There is no place in our society for this violence that should be condemned by all.
"This attack will not deter us from continuing to work on behalf of the people of Lagan Valley. This is the latest in a number of attacks on Alliance Party offices, but we will not give in to violence and intimidation. Alliance will continue to work to achieve a shared future for everyone."
Police said a member of the public reported hearing a bang in the area before the damage was discovered during follow-up investigations.
They have asked anyone who may have been in the Batchelor's Walk or Railway Street areas of the Co Antrim city between 5.30am and 6.30am to come forward.
Party leader David Ford and East Belfast MP Naomi Long have visited the office on Saturday morning in a show of support for their colleague.
Ms Long said: "Today's attack on Trevor Lunn's constituency office in Lisburn is an attack on all the people of that city. Let's be united in our determination to stand against the wreckers and build a better future for everyone."
Meanwhile the DUP's Lagan Valley MP Jeffrey Donaldson also condemned what happened.
He said: "This attack is not just directed against one Party, it is an assault on democracy itself. Anyone with information about who was responsible should give it to the police."
Lord Empey of the UUP also hit out about the attack, as well as the bomb which rocked Belfast city centre on Friday night.
He said:"We were unanimous in condemning those behind these terrorist incidents. They and their actions are of the past. This Party gave Northern Ireland the opportunity to move on with the Belfast Agreement in 1998.
"Fifteen years on, it is clear there are a few who will not accept the inclusive future that is on offer. Those who choose to exclude themselves must bear the consequences."
© UTV News