Firefighters duct-taped a 17-year-old girl to a fire truck as part of a pattern of hazing during which she was also dragged by her hair and kicked at a rural Victorian Country Fire Authority brigade.

The girl was the target of multiple shocking incidents at Eaglehawk station, a new CFA report reveals.

An investigation was launched after CCTV footage emerged in November showing the girl being dragged by her hair, kicked and left soaked by sprinklers by four middle-aged men.

“The brigade has been let down by significant leadership deficiencies by its then-captain, who was involved in a number of incidents and has displayed a lack of responsible leadership,” the CFA report, released on Wednesday, said.

In a separate incident the girl was taped to the bullbar of a fire truck in August or September and chased and smacked with a thong by a volunteer in another incident.

The CFA found the original assault was not isolated and showed a pattern of “poor behaviour”, including a lack of discipline and respect at the station.

“Many of these young people are at an impressionable age and were being inducted into a culture that is the antithesis of CFA values and the code of conduct,” the report read.

“It would appear that the young members participated in the unacceptable behaviour to gain favour with the captain and be offered ‘the first seats on the truck’.”

The captain, Hayden Allen, who has since resigned from the post, had previously said on social media his name had been tarnished by the media.

“Please understand that I can not [sic] make comment on the allegations that have been accused. But like all things there is two sides to every story and unfortunately we just have to ride the wave,” he posted on Facebook in December, in a comment since removed.

Three days before the attack, Allen also updated his Facebook profile picture to include a frame promoting White Ribbon Day, when men are urged to speak out against violence against women.

The acts captured on CCTV were referred to police, but at the request of the teenage girl, no further action was taken.

The premier, Daniel Andrews, said no one in the fire services should be treated the way the teenager was.

“This is a very disturbing case and I think the CFA have taken the appropriate steps,” Andrews said on Wednesday.

Allen was facing serious disciplinary charges but resigned instead, while one volunteer was suspended for 14 months and three others face disciplinary action.