Sniffer dog Buster joined officers during a police sting on drug couriers at Aberdeen’s train station.
Detectives, along with the sniffer dog and a dog handler, patrolled the city’s station forecourt and platforms for several hours.
Passengers arriving in the Granite City were met by Constable Brendan Merchant and springer spaniel, Buster, while plain-clothed officers kept an eye out for any suspicious behaviour.
Detective Sergeant James Callander, of the proactive CID unit, said: “Operation Aspen targets organised crime routes in the north of Scotland, a part of that is targeting the transport routes used to courier the drugs from the south to the north – the train station is one of those.
“We’ve got the drugs dog passively scanning people coming off the trains and we’ll take action should the dog indicate that it’s possible there’s drugs on that person.”