Choose from options: Determine if the sentence is true based on the text below:
The death is not believed to have been suspicious because the doors were locked with no visible signs of forced entry.

Police are investigating an unexplained death at a house in Aberdeen. Officers were called to Byron Crescent in the Northfield area of the city shortly before 21:00 on Saturday. No details of the deceased have been released. Police Scotland said inquiries were at an early stage but the death is not believed to have been suspicious.
pick from the following.
 * Yes;
 * It's impossible to say;
 * No;
It's impossible to say