Masked men attacked a member of staff and stole cash after they raided Goals Soccer Centre in Northampton.
The group of four men broke into the premises in Mereway at about 10.50pm on Thursday, June 18.
Once inside the building, they forced their way into an office, attacked a member of staff and forced him to hand over the keys to a safe.
After taking cash from the safe, they went to the centre’s reception and took more money from a till before escaping.
All four men were wearing either balaclavas or motorbike helmets along with dark clothing.
Witnesses, or anyone who recognises the men from these images, can call Northamptonshire Police on 101.
Alternatively, they can call the independent charity Crimestoppers anonymously on 0800 555 111 or use the anonymous online form at www.crimestoppers-uk.org.