Detectives are looking for witnesses after a robbery which happened in Wellingborough on Thursday 2 February.
At around 6.30am a woman was out jogging in the area of Lea Way and Western Way. A man approached her and asked for the time before producing a knife. He took her Ipod Nano player, headphones and armband holder, and her engagement ring.
The offender is described as a white man of around 6ft in his early 30s with a lean build. He was clean shaven, had dark eyebrows and was wearing a dark hooded top with a zip, dark jogging bottoms, white trainers and dark fingerless gloves. He is also described as wearing distinctive, thin, black round-edged glasses.
Witnesses or anyone with information about this incident can contact police on 101 or Crimestoppers anonymously on 0800 111 555.
Incident Number: Incident 279 of 2 February 2017