Prime Minister, Dr. the Right Hon. Keith Mitchell, yesterday expressed his condolences to the Leader of the Opposition, Hon. Tillman Thomas, over the passing of his mother.  While speaking at an event at the St. George’s University last evening, Prime Minister Mitchell said he would contact the Opposition Leader to express his sympathy personally.   The Prime Minister noted that losing a close family member or friend is always extremely difficult and he urged Grenadians to pray for the Opposition Leader and his family..