A hospital is under lockdown in Kilmarnock as police deal with a "serious incident" at the site and another in a street in the town.
Ayrshire Police said one of the incidents was at Crosshouse Hospital, while a second happened in Portland Street.
Officers said on Twitter: "These areas are cordoned off and the public are asked to avoid them at this time."
A statement by Crawford McGuffie, medical director at NHS Ayrshire and Arran, said:
"NHS Ayrshire and Arran is aware of an incident in the grounds of University Hospital Crosshouse.
"As a result, the hospital has been under lockdown, and ambulances diverted to University Hospital Ayr.
"We are assisting Police Scotland with their investigations, and to ensure the safety of staff, patients and visitors.
"As this is a Police Scotland incident, we are unable to comment any further at this time.