London, AP, 12 May 2017 – British Prime Minister Theresa May says a cyberattack that has crippled some UK hospitals is part of a wider international attack.

May says there is no evidence that patient data has been compromised.

Hospitals across the country have been hit by a “ransomware” attack that froze computers, shutting wards, closing emergency rooms and bringing treatment to a halt.

The infected computer screens demand payment for the data to be released.

Similar widespread attacks have been reported in Spain and other countries.