After a dead 15-year-old was found in Salzgitter, two young people are considered urgent suspects.
The public prosecutor's office in Braunschweig announced on Wednesday that it was a 13-year-old and a 14-year-old.
"We assume a homicide," said the spokesman for the Braunschweig public prosecutor's office, Hans Christian Wolters.
Officials discovered the young woman's body on Tuesday during an intensive search operation in a green area in the Fredenberg district.
The red-haired student was last seen in jeans and sneakers.
Her parents reported her missing Sunday night.
On Tuesday morning, the investigators published a description of the teenager and intensified the search in the Salzgitter-Fredenberg district.
Several roads were closed as a result.
The officials in Salzgitter had been supported by forces from the Central Police Headquarters in Hanover and the service dog squadron.