Speaking at the Madani Aspiration Gathering in Putrajaya on Friday (June 14), Prime Minister Datuk Seri Anwar Ibrahim said he had ordered the police to conduct thorough investigations of high-profile cases such as the murder of six-year-old autistic boy Zayn Rayyan Abdul Matiin and the acid attack on footballer Faisal Halim. br br However, he said the investigation into the cases must go through due process.