UPDATE: 'Horses out of the field' next to M61 sparks warning
Police were called to junction six of the M61, for Horwich, Chorley, and Bolton, following reports of escaped horses earlier.
The animals were feared to have got out of the field next to the carriageway, police said.
Drivers were warned of the potential hazard through warnings on the motorway's matrix signs, the force added.
When officers arrived they found 'no trace' of the horses.