A man was taken to hospital in a serious condition following at attack outside a block of Stoke-on-Trent flats.
The 23-year-old was rushed to Royal Stoke University Hospital after suffering a serious head injury during the attack.
Eyewitnesses say the block of flats on Norville Drive, Hanley, was cordoned off as the drama unfolded around at around 10pm last night.
A 22-year-old man has since been arrested.
A Staffordshire Police spokesman said: “A 22-year-old man has been arrested on suspicion of assault following an incident in Norville Drive, Hanley last night (Dec 13).
“The arrest was made after a 23-year-old man suffered head injuries falling to the ground following an assault at around 10pm.
“The injured man is in hospital in a serious condition.”
Paramedics confirmed they attended the incident last night.
A West Midlands Ambulance Service spokesman said: “We were called by police at 10:27pm to an assault in Norville Drive, Hanley.
“We sent two ambulances, a paramedic officer and BASICS emergency doctor to the scene. Crews treated one patient, a man, who was in a serious condition and he was conveyed to hospital on blue lights and sirens for further treatment.”
Anyone with any information is asked to contact Staffordshire Police on Facebook, Twitter, or by calling 101 quoting incident 655 of December 13.