About 150 local administration officials from all parts of the country were attending a seminar at the hotel called by the Ministry of Interior.
10 local officials were in the lift as it was ascending to the seventh floor.
After the lift arrived at the seventh floor and the door opened, it fell down as one official Mr Somjai Tee-od stepped out of the lift.
The lift fell down with nine people still inside.
It took rescue workers more than 15 minutes to pull all the injured people out of the damaged lift and to the hospital.
At yesterday’s inspection, the hotel manager showed official document certifying that it’s lift was regularly maintained by techinicians.
The accident might be caused by overloading, he said.
But one injured official dismissed the claim, saying if the lift was overloaded, it should have alarm sound.
There was no alarming sound at all, he said.
Pattaya police said they would charge the hotel manager for recklessly causing injuries to others.