But his announcement was slammed as a “desperate tactic” by senior Yes sources.
The East Renfrewshire MP claimed intimidation was being co-ordinated via social media sites such as Facebook, and by local Yes Scotland offices, as he suspended his 100 Towns in 100 Days tour for 72 hours to seek guidance on safety from police.
He said: “In the past fortnight, things have taken a sinister turn for the worse, and it has been organised and orchestrated by Yes Scotland, who are organising for mobs to turn up at each meeting to try and intimidate me which won’t work and to try and silence undecided voters.”
A spokesman for Yes Scotland said: “We condemn all forms of abusive, dangerous and offensive behaviour, whether it be Jim Murphy having eggs thrown at him, or Alex Salmond being harassed by a road rage motorist.”