Dhaka, May 21 -- A Dhaka court on Tuesday extended the deadline for submitting the investigation report in the high-profile murder case of journalist couple Sagar Sarowar and Meherun Nahar Runi to July 8, marking the 118th extension since the investigation began over 12 years ago.

Dhaka Metropolitan Magistrate Shahin Reza granted the extension following a plea from the prosecution, as the investigating agency again failed to submit the report. The court also approved a petition from the investigation officer seeking permission to interrogate accused Tanvir, who remains in custody.

Sagar and Runi were found brutally murdered at their rented flat in the capital's West Rajabazar on February 11, 2012. Their then four-year-old son, Mahir Sar...