The meeting is understood to be taking place in the Lyric Theatre in south Belfast and is sponsored by Co-operation Ireland, which works to bring divided communities together.
Since it was established in 1979, the charity has created opportunities for groups from the two main religious communities in Northern Ireland and from both sides of the border to learn about each other's traditions and cultures.
The handshake will be viewed as another in a long list of dramatic advances in Anglo-Irish relations.
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The boy was found unconscious and in cardiac arrest and was rushed to hospital where he died.
The victim, who was wearing her uniform at the time, was found knocking on doors nearly four hours after she was abducted.
There will be gales across Scotland and northern England this morning, but these will gradually ease through the afternoon.