other unsolved murders: <P><BR>DAILY CAMERA <BR>UNSOLVED DEATHS<BR>POLICE HAVE NO LEADS, MAKE NO CONNECTIONS<P>Saturday, December 27, 1997 <BR>Section: MAIN <BR>Edition: SECOND <BR>Page: 1A <BR>Boulder police have been unable to link the brutal beating death of University of Colorado senior Susannah Chase this week to any of a number of other recent questionable deaths or assaults in the area but have not stopped pursing possible connections. <P>"We have not yet established a connection between the Chase homicide and any other death, but I`ve not excluded that possibility," Detective Kerry Yamaguchi said Friday. Yamaguchi is leading eight detectives working on the Chase investigation. <P> <BR>More than 100 calls related to the Chase killing have been made to a police tip line, but there remain no suspects in the case. <BR>Chase was found brutally beaten in an alley north of Pearl Street between 19th and 20th streets early Sunday morning, apparently having been dragged part of the way there after being beaten near her Spruce Street home. She died late Monday of head injuries. Police say she was walking alone from the Downtown Mall to her home sometime after 1 a.m. Sunday morning when the beating occurred. <P>Yamaguchi said although a baseball bat was recovered near the scene, "We have not confirmed if this bat was the weapon, and we don`t anticipate being able to rule it in or out for some time." The blood on the bat is being analyzed at Colorado Bureau of Investigation. <P>Two other CU women were hit on the head and dragged before escaping their assailants near CU housing north of Boulder Creek this fall. <P>Questions also remain about several deaths that have occurred in the Boulder area in the last seven months. Among those are the Sept. 3 killing of a 48-year-old homeless man, David Emmit Simpson, known on the street as Mad Dog. Like Chase, Simpson`s face was beaten. In another case, Jeanette Lundgren was found dead in an irrigation ditch on the south side of Liquor Mart on Sept. 30. The coroner has yet to determine how the 48-year-old mother died. <P>All three unsolved deaths occurred in areas frequented by Boulder`s resident indigent population. But some of the homeless say it isn`t fair to look to them as especially suspect in the case. <P>Steven Enwright, a homeless man, said life on the street is too difficult as it is for the many homeless who are mentally and physically damaged. <P>"They are too easy to blame. Anytime you have drugs, you have violence. You can`t blame the homeless," Enwright said. <P>Darren Roberge grew up in Boulder, but now lives in Mesa, Ariz. In response to a Daily Camera question about the Chase murder posed Thursday, Roberge also pointed to drugs as a culprit and said escalating violence in his hom" cellpadding="1" cellspacing="0">