Forensics and scent dogs accompanied armed police at the scene. At least eight police vehicles plus a forensics team are at the property on Marshall Wallis Road in the town near the Scottish border. The road has been blocked off and officers have been seen going in and out of a property.
Police officers are guarding a police van and a sniffer dog unit is at the scene.
A photojournalist from Chronicle Live was at the scene and said: “I have not seen so many police in a long time.”
One local resident said he woke up this morning to find a number of police cars at the scene.
Speaking to Chronicle Live said: “It is frightening.
“At around 10am there were forensics here checking the drains.”