Dissident republican groups are plotting to kill North Deputy First Minister Martin McGuinness, he revealed today.
Sinn Féin said the Police Service of Northern Ireland (PSNI) told Mr McGuinness that a threat to his life had been made by dissident republicans, who murdered two soldiers and a police officer last month.
In the aftermath of the murders, Mr McGuinness branded the killers traitors to Ireland and today he said the threat against his own life would not deter him from his efforts to build the peace process.
"Over the past 24 hours I have been contacted by the PSNI and told of the existence of a threat to my life. It is believed this threat comes from a so-called dissident grouping," Mr McGuinness said.
"I have spent my entire adult life engaged in the republican struggle to bring about Irish unity and independence.
"Throughout that time there have been numerous attempts made to silence me and stop me going about my republican work.
"These have come from a variety of British state agencies and their surrogates in the loyalist gangs.
"It now seems that some of these small groups have now taken their place in that company."
He added: "One thing is for certain: neither I nor Sinn Féin has allowed these sorts of threats to stop us representing our community and driving forward the republican agenda in the past and we will not allow it to deflect us from our work in the future.
"The task of building the peace process and advancing republican and democratic goals is far too important for us to let that happen."