A Pakistani businessman, who has been questioned on the murder of his Indian origin wife, child and father-in-law, today broke his silence on the gruesome murders that shook the Indian community here. Wasim Hyder, 38, said his father, wife, and seven-month-old daughter, were shot dead ‘‘execution style’’ a week ago.Hyder, an importer and exporter of second-hand cars, said a hooded gunman walked into their home in Durban last Thursday and shot Sukan, who was in the living room, and then shot his wife and daughter. A family member had said earlier that Anisa was having problems with Hyder because he was already married with a wife and children in Japan.‘‘The family said it would be better for me if I didn’t go into the house. I was advised not to talk until the culprit is caught. All I am interested in is who shot them and why?,’’ he said. Anisa, who was pregnant with Hyder’s second child, owned two up-market clothing stores here with her mother, Zarina.