This is alarmingly similar to the case of Scott Krueger.
Scott pledged Fiji at MIT back in 1997. One evening, he and his pledge brothers were allegedly placed in a room and told they couldn't leave until they'd consumed all the alcohol in the room. Scott passed out from alcohol poisoning. The brothers were apparently afraid to call 911 that night because they didn't want to get arrested for hazing and providing alcohol to minors (real brotherly behavior!), but did so the next morning when they found he was still unconscious. He was admitted to MGH with a 0.41 BAC -- AFTER he'd been out cold for several hours. He spent a couple of days in a coma before he died.
Now all freshmen must live in the dorms. Before this, freshmen who pledged fraternities or independent living groups moved in as soon as they signed. (At the time, three out of five NPC sorority chapters had houses, and those houses weren't big enough to house all the sisters, never mind new members.) The campus is still wet, but alcohol consumption, particularly underage drinking, is more strongly policed.
This incident happened nearly twenty years ago. When will we learn??