Woman threatened with knife in Surrey home
Six men entered a woman's home in the middle of the night and threatened her with a knife.
They demanded specific things from the victim, although nothing is believed to have been stolen.
The group is thought to have planned the burglary, in rural Woldingham, for some time, Surrey Police said.
Officers are appealing for anyone who saw anything suspicious in the time leading up to the incident on Wednesday to contact the force.
The spokesman said the force particularly wanted information about a black motorbike which was seen in the area by several people.
The burglars are described as black, and with London accents. One was wearing an balaclava and the others wore hooded tops.