A woman was confronted by four burglars who had broken into her home.
Police said one of the men was believed to be carrying a gun.
The incident happened on Saturday, June 1, at the house in Cropston Drive, Greenhill, in Coalville, at about 6.45am.
The woman was woken by her dog, who was barking downstairs.
She went to investigate and found the men stealing items, including her television.
Officers said the women was left frightened but unharmed.
Detective constable Luke Brooks, who is investigating the incident, said: "This was a frightening incident for the victim, fortunately incidents of this nature are extremely rare in Leicestershire, we're taking the report very seriously and are determined to identify those responsible.
"We are in the process of identifying any witnesses or anyone who was in the area on Saturday morning, if you witnessed four men acting suspiciously or saw a vehicle not usually seen in the area on that morning we would urge you to contact us.
"The television that was stolen has a vertical scratch down the centre of the screen, if you know someone who has acquired a similar television since Saturday we would like to speak to you as soon as possible. Any calls received will be treated in confidence."
Call police on 101.
