A Northeast Baltimore man was sentenced to life in prison Friday for the murder of a 91-year-old woman during a burglary in her home in the 4700 block of Moravia Road in August 2011, according to the city state's attorney's office.

Anthony Robinson, 46, pleaded guilty to the murder of Irene Logan, who was found beaten, strangled and stabbed in her home, police said.

Police said they linked Robinson to the murder after finding his DNA under Logan's fingernails and on a cigarette butt outside her home.

"Thanks to the efforts of police and prosecutors, we produced a swift disposition, which is what the victim's family wanted, and we achieved an outcome that likely will keep this defendant behind bars for a very long time," State's Attorney Gregg Bernstein said in a statement.

Robinson, who lived near Lake Montebello, also pleaded guilty to an unrelated robbery of another home in July 2011, for which he received an 18-year concurrent prison term, the state's attorney's office said.