"We have detained Mann and other AAP leaders with around 60 workers as they were going to hold a public meeting without permission," Superintendent of Police Dipankar Trivedi said.
Those detained also included AAP MLA from Delhi Gulabsingh Yadav and Gujarat AAP leader Kanu Kalsaria.
The spokesperson of AAP's Gujarat unit Harshil Nayak said that Mann and others were detained four km from the venue.
Mann, MP from Sangrur in Punjab, earlier told reporters that they were informed after midnight that they were denied the permission to hold the rally. He termed the Gujarat model as 'model of Hitler'.
"I had heard a lot about Gujarat model. I thought it was a model of progress and development, but when I came here I found out that it is nothing but a model of Hitler. We were not granted permission to hold our rally, our tents were removed at night. If this is Gujarat model, it is very dangerous for the democracy," he said.