At around 12.15am on Thursday 12 September 2019, police were called to reports that a firearm had been discharged on Vicarage Road.
A short time later, at around 12.20am, officers responded to reports of a second shooting on Redland Court at Ashton-in-Makerfield.
A 41-year-old woman was taken to hospital after being shot twice in the back.
Her injuries are not thought to be life threatening.
No arrests have been made and enquiries are ongoing.
Chief Inspector Liz Sanderson, of GMP’s Wigan district, said: “Our thoughts are with the woman as she makes her recovery and I would like to stress just how seriously we are taking these incidents.
“Firearms were discharged at both locations within a matter of minutes of each other and we are treating these two incidents as linked.
“We would like to reassure residents that extra patrols will be in the area and anyone with concerns should speak to a police officer.”
Anybody with information should contact police on 0161 856 3034 quoting incident number 0050 of 12/09/2019, or the independent charity Crimestoppers, anonymously, on 0800 555 111.