Prime Minister Datuk Seri Najib Tun Razak has conveyed his condolences through a phone call to the father of Mohamad Thaqif Amin Mohd Gaddaffi, who passed away on Wednesday afternoon.The call was made through Deputy Minister in the Prime Minister's Department, Datuk Dr Asyraf Wajdi Dusuki, who represented Najib in paying respects to the boy at Hospital Sultan Ismail.