Overview

• Jason S. Kurumoglu, 30, pleaded not guilty to second-degree murder in the death of his mother, Melida Velasquez, 59, in their West White Street home.
• A Suffolk prosecutor said officers found Velasquez facedown on the kitchen floor with a knife in her back and alleged Kurumoglu had blood on his hands and appeared calm.
• Judge Bernard Cheng ordered Kurumoglu held without bail and set a return to court for Monday in Central Islip.
• Prosecutors said evidence includes surveillance video, a bloodstained shirt recovered from the defendant’s bedroom, and a neighbor’s account of hearing Velasquez scream, "God help me," before a thud.
• Police said they responded to a 5:26 p.m. 911 call Tuesday and found Velasquez dead; no motive has been released, and the Brentwood School District said the incident is unrelated to the elementary school across the street.