Houston at approximately 6:15p.m. Corll likely offered Konen a lift to his home, which Konen evidently accepted. At the time of Konen's disappearance, Corll lived in an apartment on Yorktown Street, near the intersection with Westheimer Road. Brooks led police to Konen's body on August 10, 1973. The body was buried at High Island Beach. Forensic scientists subsequently deduced that the youth had died of asphyxiation caused by manual strangulation and a cloth gag that had been placed in his mouth. The body was found buried beneath a large boulder, covered with a layer of lime, wrapped in plastic, naked, and bound hand and foot with nylon cord, suggesting he had been violated. About the time of Konen's murder, Brooks interrupted Corll in the act of sexually assaulting two teenage boys whom Corll had strapped to a four-poster bed. Corll promised Brooks a car in return for his silence; Brooks accepted the offer and Corll later bought him a green Chevrolet Corvette. Corll later told Brooks that he had killed the two youths, and offered him $200 (the equivalent of approximately $1,536 ) for any boy he could lure to Corll's apartment. On December 13, 1970, Brooks lured two 14-year-old Spring Branch youths named James Glass and Danny Yates away from a religious rally held in Houston Heights to Corll's Yorktown apartment. Glass was an acquaintance of Brooks who, at Brooks' behest, had previously visited Corll's address. Both youths were tied to opposite sides of Corll's torture board and subsequently raped, strangled, and buried in a boat shed he had rented on November 17. An electrical cord with alligator clips attached to each end was buried alongside Yates's body. Six weeks after the double murder of Glass and Yates, on January 30, 1971, Brooks and Corll encountered two teenage brothers, Donald and Jerry Waldrop, walking toward their parents' home. The Waldrop brothers had been driven to a friend's home by their father with plans to discuss forming a bowling league and had begun walking home after learning their friend was not at home. Both boys were enticed into Corll's van and driven to an apartment Corll had rented on Mangum Road, where they were raped, strangled and subsequently buried in the boat shed. Between March and May 1971, Corll abducted and killed three victims, all of whom lived in Houston Heights and all of whom were buried toward the rear