Durham Constabulary
The Labour leader has pledged to resign if issued a fixed penalty notice over so-called beergate.
Durham Police said Boris Johnson's top adviser "might" have breached lockdown rules during trip to the north-east.
Boris Johnson's senior adviser is under pressure from Tory MPs to resign.
Meanwhile, Gloucestershire’s independent police and crime commissioner said Cummings had made a "mockery" of lockdown restrictions.
From childcare rules to Barnard Castle, these are the questions that so far have gone unanswered.
Police taking threats 'extremely seriously'.
'It will support officer's decision making.'