Recent Prince George's County Crime Reports (4 Mar 2010)

Washington Post (County police reports, generally for February 15 - February 21, and municipal police reports which may cover earlier and later dates)

Gazette:

• County Police, Districts 1-6 (February 22 - February 28)
• Weekly list of county murders (last updated 25 Feb 2010, but incomplete)
  
• Greenbelt (February 27 - February 26)
• Laurel (February 17 - February 28)

Mount Rainier (February 17 - February 25)

Gory Prince George's (Unofficial lists of homicides since 2006)

Police Press Releases (February 25 - March 3) Crime mapping

• 02/25/2010 Police Seek the Identity of Armed Robbery Suspect - Surveillance Pictures Released (2681) http://bit.ly/bowEEe
• 03/01/2010 Police Investigate Homicide of Man found on Hamlin Street (2682) http://bit.ly/9AYHdC
• 03/02/2010 Police Investigate Homicide on 15th Avenue (2683) http://bit.ly/cmn02p
• 03/03/2010 District II COPS to Host Spring Break Edition of “Kids Empowerment Camp” (2684) http://bit.ly/cqZYwL
• Notes: 
• There are no online press releases for the homicides on February 14 (Cobb) and 18 (Wheeling)
• Police have told at least one reporter the identity of victims from the February 1 (Camara) and 9 (Nucamedia-Ventura) homicides, but denied my request for the names and have not posted the information online.

Sheriff's News Releases (None posted since 7 Aug 2009)

See also three non-official sites with more user-friendly interfaces than the official site:

• Crime Blotter 
• Crime Reports (does not seem to show recent homicides)
• Murder in Maryland, Washington, DC, and beyond (by Chris Nelson)