A man was encouragement in the head in the seaside town of Southport.
The man, aged in his twenties, is not thought to be in a life-threatening contingency.
A bus driver also suffered a minor injury. He was been taken to asylum.
The incident occurred in the Eastbank Street area of the town at around 12.30pm.
A man has been dram in the head in Southport
One resident told the Liverpool Echo: “Someone has been be in command. It was just round the corner by Coral. Police have cordoned the arrondissement off and no one is allowed in or out of the shops.
“My husband just phoned his shop to make trustworthy his staff were okay.”
Another said: “Scary stuff, I simply rushed the kids away and back home! Feel sick!
“The guy who got buckshot was sitting up and conscious so fingers crossed he’s okay.”
A man has been ache after a shooting in Southport
One nearby business owner said he saw a man direction from the scene with a gun.
The witness has since closed his shop because “no-one can get in or out”.
The offensive happened “in the middle of the day and in the middle of the street”, a local fast food blow the whistle on buy owner said.
Chief Inspector Paul Sutcliffe of Merseyside Watch said: “I want to appeal to any witnesses to this incident to come flip.
“To fire any weapon in a busy street at this time of the day is incredibly take for granted and there will have been numerous people in the area, some of whom may be enduring seen the incident or somebody running off, or have dashcam or CCTV footage to abet.
The centre of Southport has been shut down grasp the shooting
“We are determined to find the person responsible and bring them to fair play and I want to reassure people that there are extensive enquiries unbroken to establish the circumstances.”
The shooting took place as the streets were stuffed with Christmas shoppers.
Photos show the previously busy rows now cleared of pedestrians.
Road closures were in place on Eastbank High road from Kings Street to Lord Street.