Specialist explosives officers attended to assess the scene and confirmed that a grenade had been used.
Detective Chief Inspector Clare Devlin from GMP’s Salford division, said: “While we are only in the early stages of our investigation, we believe this was a targeted attack and can confirm that a hand grenade was used.
“Clearly this is something we are taking extremely seriously and I am sure people in the area will be hugely shocked by this news.
“There are a large number of officers dedicated to investigating exactly what has taken place here and they will also be speaking to residents in the local area today and over the coming days.
“Thankfully no one was injured during this attack, although the occupants of the address are understandably extremely distressed.
“Make no mistake that we are going to find out exactly what has gone on here and why, and catch those responsible. This kind of violent behaviour on the streets of Salford will simply not be tolerated.”
If anyone has any information about what has happened, please contact police in Salford on 0161 856 9283, or if you would prefer to pass on information anonymously call Crimestoppers on 0800 555 111.