<p>NORRISTOWN, Pennsylvania (AP) – A University of Pennsylvania professor was charged Monday with beating his wife to death in their suburban kitchen after she told friends she planned to divorce him.</p>
<p>Rafael Robb, a 56-year-old economics professor, had told investigators he was in Philadelphia when his wife was killed December 22.</p>
<p>Prosecutors, however, said his alibi didn’t hold up. Montgomery County District Attorney Bruce Castor has said the scene was staged to look like a burglary.</p>
<p>“Dr. Robb lied to the police about an obvious motive for this murder, his knowledge of his wife’s recent plans to divorce him and obtain a significant portion of his wealth,” according to an affidavit by Upper Merion police Detective David Gershanick.</p>
<p>Robb was charged with first- and third-degree murder, possession of an instrument of crime, tampering with evidence and lying to authorities.</p>
<p>Robb had said he took the couple’s 12-year-old daughter to school that morning and last saw his wife alive before driving to work. He said he returned home later that day and found her body.</p>
<p>Authorities said Ellen Robb’s injuries were so extensive they initially thought she was killed with a shotgun blast to the face. The murder weapon has not been found.</p>
<p>Ellen Robb, 49, had told relatives and others that she had hired a divorce attorney and was expecting $4,000 a month in spousal support, prosecutors said in court papers. The couple have a 12-year-old daughter.</p>
<p>Robb has been at Penn for at least four years, according to a resume posted on his university Web site. Penn officials said earlier that they had arranged for someone else to teach Robb’s graduate seminar in game theory this semester.</p>
<p>His lawyer, Francis Genovese, did not immediately return a call seeking comment Monday.</p>
<p><a href=“http://www.cnn.com/2007/LAW/01/08/prof.charged.ap/index.html[/url]”>http://www.cnn.com/2007/LAW/01/08/prof.charged.ap/index.html</a></p>