A teenager was attacked with a machete and gunshots were heard at the same time in Tameside.
Police are now investigating if the two incidents on neighbouring streets in Droylsden on Saturday night are linked.
A 16 year-old was assaulted with a machete close to Brierfield House, a block of flats on Lancaster Road at around 9:40pm Greater Manchester Police (GMP) said.
Emergency services were called and he was rushed to hospital where he remains in a stable condition.
Around the same time police also received reports of what appeared to be gunshots on neighbouring York Road, which runs off Lancaster Road.
"We are investigating whether these two incidents are linked or not" a GMP spokeswoman said.
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A huge police cordon spanning several streets was in place last night.
Lancaster Road, Leicester Road and York Road were all taped off for several hours as detectives investigated the two incidents.
Officers could be seen carrying out searches in the area as well as taking statements from local residents.
Anyone with information is asked to call police on 0161 856 5887, quoting incident number 3004 of 11/07/20.
Reports can be made anonymously to the independent Charity Crimestoppers on 0800 555 111.
