Detectives have released E-fit images of two suspects after a mother and her young son were threatened in their home near Huddersfield.
The men entered the house on Chestnut Close at Newsome brandishing weapons and making demands for money from the female occupant who was present with her young son and her friend at the time.
Her son managed to flee the property and alert neighbours but he was followed by one of the suspects and confronted outside the property before they both fled empty-handed in the direction of the local surgery.
Suspect one is described as a black male aged 34 to 35, 5 ft 11 in height, with plaited hair and spoke with an African accent. Suspect two is described as a black male with a shaved head, 5 ft 11, with a skinny build and in his late 20s to early 30s.
Det Con Joanne Jabczynski of Kirklees District CID said; "Thankfully no one was injured during the incident and property was not stolen, however it has clearly been very distressing for the victim and her son.
"I would appeal to anyone who may have any knowledge of this incident or may have been in or around the area on the evening of Wednesday February 22 and may know or have seen anyone matching the suspect’s descriptions, or acting suspiciously to come forward and speak to the police. Our enquiries in to this incident are very much ongoing."
Anyone with any information is asked to contact DC Joanne Jabczynski or DS Abbas at Kirklees CID via 101, quoting reference 13170085037. Information can also be passed anonymously to the independent crime fighting charity Crimestoppers on 0800 555 111.