Officers from Salford are investigating a number of robberies that have happened in the last month.
Officers are receiving reports that people on motorcycles or scooters are mounting pavements and snatching mobile phones from unsuspecting victims.
Greater Manchester Police said the offences are happening at the times people are commuting to and from work.
Robberies with similar circumstances are also happening on the outskirts of Manchester City Centre near to Victoria Station and the Manchester Arena.
Stage set for return of Leeds Summer Series
Three jailed over Rochdale machete attack linked to crime feud
Police appeal to trace wanted Bradford man
Wakefield man convicted of manslaughter after pub incident
Nominations open for Blackburn with Darwen Community Volunteer Awards
Woman arrested after attempted robbery in Cheetham Hill
Bradford Council seeks inclusion in grooming gangs inquiry
Former care home worker jailed for 25 years over child abuse offences
Bradford man jailed for sexual assault on teenager
Culture at the Heart of Stockport’s Transformation
South Asian Art Exhibition Opens at Cartwright Hall
Men’s Mental Fitness Programme Launches in Blackburn
Remix Saturdays
Legal Show
Alim OnAir
The Golden Era