Police began searching for Marcel Hesse after the dead boy was found in his cellar on Monday night. They said he posted images of the body online.
The teenager, 19, was arrested in the western city of Herne on Thursday after identifying himself at a restaurant, German media report.
He then reported a fire in a nearby flat, where another body was found.
Mr Hesse is alleged to have boasted in an online chat-room about also murdering a woman. The body found on Thursday was male, a police spokesman said.
Shocked locals have been gathering outside the apartment in Herne.
The nine-year-old boy died of multiple stab wounds, and the discovery of his body on Monday sparked a huge manhunt.
On Wednesday, with the suspect still at-large, children in Herne were told to play indoors at kindergartens. Police warned the public that the teenager may be armed.
This post was written by: Author Name
Your description comes here!
Get Free Email Updates to your Inbox!
Post a Comment