Cheshire Police have warned the public to be vigilant after criminals targeted Santander cash machines over the weekend.
A number of machines in Wilmslow were tampered with, while Lancashire Police said some ATMs there had been 'compromised'.
While no incidents in the Chester area have been recorded, police have warned ATM users of any bank to be vigilant as a matter of course.
A police spokesperson said: "We can confirm that there had been a number of ATMs tampered with over the weekend, however these are not thought to be linked to skimming devices.
"It appeared that in one case keypad numbers had been stuck down in some way and a ruler had been attached to anther causing an issue with the buttons.
"Users of all ATMs regardless of bank, business or location should always be vigilant as a matter of course and report any suspicious activity to police on 101."
A Santander spokesperson said: "Santander was contacted this weekend by police who requested that five ATM machines in the North West and Lancashire area be shut down due to potential criminal activity and vandalism. The five ATMs in question were shut down immediately. The Santander ATM network remains fully operational and we are assisting the police with their enquiries in relation to the five ATMs in the Lancashire area.