Baltimore police are investigating the rape of a woman inside her home in Reservoir Hill, and are trying to determine whether it's related to a series of other attacks in recent months.

As you might remember, police are still searching for the person responsible for a series of East Baltimore assaults in which women were attacked at bus stops and raped in public places. Police have told us that in those attacks, they found the DNA profiles of at least two suspects but have not been able to make a match. After this weekend's attack, The Baltimore Sun's Liz Kay reports that police are expediting DNA and other forensic tests in their efforts to find a suspect.

Police have created a 24-hour tip line, 888-223-0033, for anyone with information on the attacks.

Here is some of Liz's story that is now posted on the Baltimore Sun's web site:

The woman was sleeping in her first-floor apartment in the 2400 block of Callow Ave. when she awoke at about 7 a.m. and saw a man standing above her, according to Agent Donny Moses, a police spokesman. The man apparently came in through an open window and made his way to her bedroom, Moses said.

The woman told police that the suspect covered her mouth and sexually assaulted her, then forced her to clean herself. Police do not believe the man was armed, but Moses said the victim was unable to provide a detailed description of the suspect.

Sunday's incident seems similar to three burglary-rapes and one incidence of sodomy reported between May 2008 and November 2009, said the Police Department's chief spokesman, Anthony Guglielmi.