Gardaí in Dublin are investigating a pipe bomb attack on a house in the north inner city last night.
The device was thrown at the rear of a house in Rutland Court at around 10pm.
It exploded on a balcony and blew out the windows, but none of the 10 people inside at the time were injured in the blast.
It is unclear if the attack was linked to another pipe bomb explosion outside a house in the Finglas area on Sunday night.
That attack is believed to have been connected to a serious feud between two criminal factions in Sherriff Street area of the north inner city.
The feud was prompted by the rape of a young girl by a leading gang member.