A man was robbed at knife point near Newbury's Victoria Park on Saturday.
The 24-year-old was approached by two men as he walked through an alleyway between the park and the Robin Hood roundabout.
The men asked him for the time and then threatened him with two knives, demanding that he hand over his wallet and phone.
The robbery occurred at 5.10am on Saturday, July 16.
The victim was not injured.
The first robber is described as white, 5ft 1in tall, and between 16 and 20 years old and of medium build.
He was wearing a dark blue hooded jacket.
The second offender is around 5ft 6ins, with a slimmer build and was also wearing a dark hooded jacket at the time.
Det Con Brian Lock said: "We would like to reassure the community that we are investigating this robbery and I would appeal to anybody who has any information as to the identity of the offender to come forward to police on the non-emergency number 101.
"We would also be grateful for any witnesses who may have seen two men in the park earlier in the evening to come forward."
If you do not want to speak directly to the police you can contact the independent charity Crimestoppers anonymously on 0800 555 111.
No personal details are taken, information is not traced or recorded and you will not go to court."