NT Police have arrested and charged a Central Australia tour bus company employee in connection to the fatal Hermannsburg bus crash in June, that saw one passenger killed and five other seriously injured after the bus carrying 19 people rolled over.

The 43-year-old man was arrested in Alice Springs on Wednesday and charged with two counts of negligently causing serious harm. He was later bailed to appear in Alice Springs Local Court today.

Police said the man charged was not the driver, but did not explain how the employee is alleged to have caused serious harm.

“Major Crash detectives continue to investigate the circumstances surrounding the fatal crash,” said Detective Senior Sergeant Brendan Lindner in a statement.

“The man charged overnight is an employee of the tour company but not the driver of the bus.”

Snr Sgt Lindner said police expected to lay additional charges “related to the death of the passenger and other injured passengers … at a later time”.

In June, a man died and six other passengers were seriously injured after a tour bus crashed and rolled over on Larapinta Drive, five kilometres east of the remote community of Hermannsburg, and more than one hour west of Alice Springs.