Police are appealing for witnesses after a man was stabbed in the arm.
Officers attended an address on Tarbet Street, Lancaster, at around 1.45pm on Sunday April 3 following reports of an assault.
Upon arrival it appeared an argument had broken out between a group of four adults at the address, leading to a 33-year-old male being wounded.
He was airlifted to Royal Preston Hospital to be treated for the stab wound and a possible bleed on his lung.
He is now in a stable condition and is due to undergo surgery today.
Detective Inspector Beverley Foster, of Lancashire Police, said: “The man was very lucky as he suffered a deep stab wound to his arm, which could have been a lot more serious.
“As it is he has suffered a bleed on his lung which requires surgery.
“We are now appealing for anyone with information about the incident to come forward to help us with our enquiries.”
A 35-year-old male, of no fixed address, has since been arrested on suspicion of wounding with intent, after handing himself in to police.
Anyone with information is asked to contact police on 101, quoting log number 746 of April 3, 2016.