An incident took place at One Stop on Woodwater Lane at around 8.20pm on Monday 19th February.
It's reported the teenager went into the store armed with knife and demanded goods.
He ran off and was detained shortly after.
14 year old boy arrested following alleged robbery in Exeter.
More from Local News
-
Three injured in Plymouth street fight
Police are appealing for witnesses
-
Pedestrian dies in Brixham crash
Articulated lorry involved
-
Body found at Sandy Bay
It's after two men went missing on Christmas Day
-
Raw sewage pours into landmark Devon river
Storm overflows gush into waterway for 40 per cent of year
-
Work underway to return shingle to East Devon beach
Bulldozer in action for Storm Goretti clean up
-
Car park fees increase at Devon beauty spot
Northam Burrows season ticket to rise
