New Delhi, Dec 08 (ANI): A Delhi court on Monday pronounced four people guilty in 1975 LN Mishra murder case. Mishra was former railway minister and was murdered at a function in Bihar nearly 40 years ago. The court has fixed December 15 for hearing arguments on the quantum of punishment. All four have been taken in custody. Over 200 witnesses, including 161 prosecution witnesses and more than 40 defence witnesses, were examined in the case. The accused had earlier approached the Supreme Court for quashing of the trial against them in the murder case. The apex court had on August 17, 2012 dismissed their pleas on the ground that the proceedings could not be quashed merely because they had not been concluded in the last 37 years.