Published Thursday, 01 May 2014
The offices have been subjected to numerous attacks over the past 18 months. (© UTV)
Police said the office on the Upper Newtownards Roads was attacked with a petrol bomb and paint bomb in the early hours of Thursday morning.
Damage was caused to the shutters of the office.
A police spokesman said: "Shortly before 4am, police on patrol in the area noticed paint damage to the shutters at the front of the premises.
"Upon further examination it was discovered that a paint bomb had been thrown at the property.
"The remains of a burnt out petrol bomb was also discovered at the front of the premises."
CCTV footage showed at least one person throwing a paint bomb and then a petrol bomb which landed on the pavement.
It comes after the building, which is the office of MP Naomi Long, was attacked by four men with seven petrol bombs on Tuesday night.
Local Alliance MLA Chris Lyttle said: "This is an attack on the values of the vast majority of people in East Belfast. It is an attack on lives and livelihoods in east Belfast. We need it to stop, we need people with information to bring that to the police and we need people to stand clearly together against this type of attack.
"There is clearly a small number of individuals, dangerous individuals who are intent in terrorising people in east Belfast and we need to see the police working in a co-ordinated way against that. We need to see political leaders standing clearly against this as well."
Police are appealing for information.
© UTV News