GooglePolice say an attack that left a 72-year-old woman and a 12-year-old boy in hospital could be linked to an ongoing Edinburgh-Glasgow gang feud.
The pair were assaulted at a house in Egilsay Crescent in Milton, in the north of Glasgow, shortly after midnight on Saturday.
Police Scotland last week scaled up its response to deliberate fires in the city, which may be connected to several blazes and gun incidents in Edinburgh.
Six properties in the west of Scotland have been targeted in the space of a week.
The condition of the woman and the boy following the Milton incident is not known.
A Police Scotland spokesperson said: “Both were taken to hospital for treatment. Inquiries are ongoing.”
It comes after a number of arrests were made in the east of the country over violent incidents. Officers have seized weapons, drugs and cash.
On Friday, the force confirmed it had visited more than 100 properties and was reviewing over 700 hours of CCTV footage.
Videos claiming to show the fires have been posted online alongside warnings naming families that have been linked to organised crime.
The Edinburgh attacks have been ongoing for a number of weeks but on 3 April a house was deliberately set on fire more than 50 miles away in Cortmalaw Gardens, in the Robroyston area of Glasgow.
The following day a garage on Milton Road, Kirkintilloch was torched.
On 7 April properties in Gala Street and Ashgill Road, Glasgow, and Meadow Court, Stepps, were set on fire.
And on 8 April a business premises on an industrial estate on Wellington Road, Bishopbriggs, was targeted.
Det Chief Supt David Ferry, of Police Scotland’s specialist crime division, said: “It is vital that we trace whoever is responsible for these reckless acts as soon as possible.
“While we believe these to be targeted attacks, the consequences could have been far more serious and I want to make it clear this behaviour will not be tolerated.”
Meanwhile, in the east the force said it had executed search warrants and made a number of arrests.
On Thursday two teenagers were arrested in connection with wilful fire-raisings.
Det Chief Supt Ferry vowed arrests would continue in the coming weeks and urged anyone with information to contact officers.
