A banner accusing Sinn Féin of being “traitors” has been put up at the office of the party’s deputy leader Michelle O’Neill.

The banner was stuck to the office shutters after O’Neill laid a laurel wreath at the Cenotaph at Belfast City Hall on Sunday, becoming the first senior Sinn Féin figure to take part in an official Remembrance ceremony.

The banner - which was put up at the office O’Neill shares with Mid Ulster MP Cathal Mallaghan in Cookstown in County Tyrone - featured the word “traitors” alongside bloody handprints and a poppy.

The sign is being treated as a “hate-motivated incident”, police have said.

Asked about the sign, O’Neill said it was “difficult” to hear criticism about her decision to attend the commemoration but she had a role to play.

“I’ve committed to being a first minister for all and I will live up to that at every turn,” she said.