Kirkuk, Mar. 28, 2007 (CWNews.com) - Two Chaldean Catholic nuns were murdered in their residence in Kirkuk, Iraq, on March 26, police have reported.
 
 Sisters Fawzeiyah and Margaret Naoum-- elderly siblings who lived together as Chaldean religious-- were stabbed repeatedly by an unknown assailant who broke into their residence, the police revealed.
 
 Investigators had no immediate explanation for the killings, reporting that there was no sign of robbery.
 
 Iraqi Christians have been subjected to frequent attacks in recent months, with some militant Islamic groups expressing determination to drive the Christian minority from the country. It is unclear whether the murder of the two sisters-- who lived near the Chaldean cathedral in Kirkuk-- was related to that form of religious violence.