There's a Russian sleeping in my bed

Having moved out of my home because of a year of waste water ingress from the bathroom upstairs (it still continues), I have to return each day to feed my clown fish.

My sister did this for me today because I am down in Cornwall.

She opened my flat door and was confronted by an unknown man. He had been sleeping in my bed.

"Who are you? What are you doing here?" She was cross and scared.

With miming and broken English, it was communicated that he was Russian and had broken in through the bathroom window as he wanted somewhere to sleep. My sister told him to sit on the chair and stay there while she called the Police. They arrived half an hour later, arrested him and took him away. Forensics are yet to turn up to take fingerprints.

So, since being forced out of my home because of the flood, my home has now become prey to squatters. I want this nightmare to end.