In the search for the missing eight-year-old Julia from the Berlin area in the border area between Bavaria and the Czech Republic, a so-called Alpine task force is now to help.
The police, who are specially trained for operations in the mountains, come from southern Upper Bavaria to the Upper Palatinate, said a police spokesman on Tuesday.
First, the Bavarian Broadcasting Corporation reported on it.
The search continued during the night, the police spokesman reported in the morning.
So far, however, there has been no new evidence or knowledge as to where the eight-year-old could be.
Several hundred emergency services from the Czech Republic and Germany - police officers, mountain rescue workers and firefighters - had used helicopters and dog teams to search for the schoolgirl in the area.
The child has been missing since late Sunday afternoon after parents lost sight of the girl, brother and cousin while playing.
The family from the greater Berlin area hiked on the Czech mountain Cerchov (Schwarzkopf) at the weekend.
The area is about two kilometers from the Bavarian border town of Waldmünchen.
The couple's son and nephew were eventually found, with the eight-year-old daughter missing.
According to the police, the search will be a race against time.
"The chances of the girl are decreasing by the hour," said police spokesman Josef Weindl on Tuesday of the "Passauer Neue Presse".
"A child can do it for two days without eating or drinking," he said.
The cold is the big problem.
In the past few nights, the temperatures have moved around freezing point.
The child may have found some protection in a cave.
"Every hour is important," Weindl told the newspaper.