Three Birmingham teenagers have been arrested in connection with two robberies in Stirchley over the weekend.
Police were called to two crimes on Sunday afternoon, where teenagers were approached by three young men wearing balaclavas and forced to hand over their mobile phones.
The offenders threatened the youngsters with a large knife before stealing a mobile phone, tissues and an inhaler and running off along Fashoda Road.
The robberies happened between 4.15pm and 4.50pm on 21 December on Dads Lane and Dogpool Lane.
The suspects, aged 15, 15 and 18, were arrested around half an hour later on Pershore Road. They were today released on police bail pending further enquiries.
Officers from Birmingham South Investigation Team urge any witnesses to contact them by dialling 101, or speak to the charity Crimestoppers anonymously by dialling 0800 555 111.