A crude device that partially exploded in a gas meter box could have had "horrific" consequences, it has been claimed.
The object was discovered after police received reports that petrol fumes were coming from the property on St Gall's Avenue in west Belfast.
Bomb disposal experts attended the house in the Clonard area of the city at around 8.40pm on Friday to find the device had partially detonated.
Speaking at the weekend, Sinn Fein MLA Fra McCann condemned those responsible and requested that police patrols in the area be stepped up.
He said: "The consequences of what could have happened had this device gone off are too horrific to even imagine.
"This morning I have engaged both the PSNI and the local housing association to ensure urgent follow-up action is undertaken.
"I have sought additional police patrols in and around the area concerned."
Mr McCann added that those responsible "had no place in our community".
A PSNI spokesman appealed for information.
He said: "Police responded to a report of a smell of petrol at a house on the street.
"Upon attendance a suspicious object was discovered inside the gas box of a property.
"Army (Ammunition) Technical Officers attended and, upon examination, declared it to be a crude explosive device that had partially detonated.
"The remnants of the device were removed for further examination."
People with information should contact Musgrave Police Station on 101, quoting reference 1422 of 15/09/17. Information can also be passed anonymously to Crimestoppers on 0800 555 111.