Speaking today Mr McGuinesss said:
"I wish to express my deepest sympathy to the Doherty family following the loss of two family members who were tragically killed in a road traffic accident late last night.
"I'm sure they will be in the thoughts of many people. To lose two members of a family through a road traffic accident is always a tragic, sad occasion, it is especially more acutely felt at this time of year in the weeks before Christmas.
"This now brings the number of people killed in the area to four over the past number of weeks. We need to examine why this is the case and ensure that care is taken to ensure that we see no more dreadful occasions such as this."