http://www.myfoxdc.com/dpps/news/dpgonc-NY-Killer-Tripped-Pants-Plunged-Death-fc-20091218_5152028
...Hector Quinones blew away 24-year-old Carlos Rodriguez Jr., and his father Carlos Rodriguez Sr., 52, and then repeatedly stabbed grandfather Fernando Gonzalez, 87, to death before the elder Rodriguez's wife and adult daughter walked unwittingly into the carnage...
...his low-slung pants fell to his ankles, tripping him and sending him falling three stories to his death, authorities said...