A large rock was hurled through one of the shop front windows of Eurocycles in Victoria Road, Douglas.
Police say this was the second time in six weeks that this has happened at the same store.
Now officers are appealing for any witnesses in relation to this damage or any information as to who is responsible.
It happened around 3am last Tuesday (February 25) when someone threw what has been described as a large rock through one of the shop front windows.
If anyone does know anything about this incident they are urged to contact police headquarters on 631212.