According to the police, a 39-year-old prisoner escaped from the district court in Regensburg.
The man was convicted of murder and robbery resulting in death, among other things, and has been serving a life sentence since 2011, it said.
According to a police spokesman, he strangled a 76-year-old woman during a raid on a lottery shop in Nuremberg.
At an appointment on Thursday in the district court, he jumped out of a window in a lawyer's room on the ground floor.
The circumstances of the escape are still unclear, the police said.
From the courthouse, the man ran in the direction of the Dörnberg Park opposite.
A court spokesman said the man was brought to a hearing at the district court because of his resistance to law enforcement officials in the Straubing prison.
According to the information, the police are looking for the 39-year-old Algerian with numerous officers and a helicopter and are asking witnesses for information.
But she expressly warns against speaking to the man.
He is considered violent.
The man is 1.76 meters tall, slim and has shoulder to elbow length, wavy dark hair.