The 29-year-old author and writer was shot dead last Thursday night in Creggan by dissident republican terrorists.
A funeral service is being held today in St Anne’s Cathedral, Belfast at 1 pm.
She will be laid to rest afterwards in Carnmoney Cemetery, Co Antrim.
Mayor Boyle had a long standing friendship with Lyra having taught her media studies when she was a teenager.
He tweeted today: “It’s with a sad heart that I attend the funeral of murdered journalist Lyra McKee.
“As First Citizen I will bring the prayers and thoughts of the people of Derry.
“You can show solidarity at the Guildhall Square at 1 pm today & sign the Book of Condolence
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