Those who are missing since the bridge broke on Sunday, all are tourists and most of them are students, said Pakistani media Dawn.
With other tourists, they were broken when they stood on the walk-in bridge.
Nilam Valley Superintendent of Police Mirza Zahid Hossain said that at least 20 to 25 tourists were in the bridge during the break.
"Many people get flushed with a heavy torrent immediately. So far six bodies have been recovered, "he said.
The number of missing tourists could not be ascertained as many tourists were not sure, said SP Hussein.
An official of the Control Room of Muzaffarabad said that eight students have been rescued so far from the water. They were admitted to the local district hospital. After initial treatment, three were released, and the condition of the rest is stable.
A group of students from Lahore, Sahibal, Faisalabad and Multan from the main town of Muzaffarabad, 75 kilometers north-east of Kundal Shahi, went to the picnic near the city.
The leader of the Pakistan People's Party (PPP), Raja Mubashera Ijaz, who is among the eyewitnesses, has probably broken the bridge over the people.
He said in Don, "The students are busy taking salafs after seeing green emerald water, at which time the bridges broke down and they floated."
Four of the students were found hanging on a wooden pillar of a broken bridge, locals rescued them, and four others were rescued somewhere, said Ijaz.
SP Hussein said the tourists ignored a directive on the board, but the tourists ignored the number of how many can be raised together in the wooden bridge.
Nilam Valley Azad is one of the most attractive tourist destinations in Kashmir. Every summer, millions of tourists from all over Pakistan came to visit the area, Don said. However, foreign tourists are not allowed to travel in the area as neighboring India is very close to the control of Jammu and Kashmir's control line.