Police have charged a third man after a police officer was struck to the head and injured at Emerton earlier this month.
An officer stopped his vehicle on Luxford Road about 12.30am on Sunday 8 April 2018, after he saw two men fighting.
When the officer attempted to intervene, it is alleged a third man hit him on the head with a glass bottle, causing a large laceration.
The Acting Inspector was taken to Nepean Hospital in a stable condition and later released.
The three men fled after the incident and a large search of the area was conducted, with local police assisted by the Public Order and Riot Squad, PolAir and the Dog Unit.
Officers from Mount Druitt Police Area Command arrested a 26-year-old man at a home in Dean Park.
He was taken to Mount Druitt Police Station and was charged with conceal serious indictable offence.
The man was refused bail and appeared at Mount Druitt Local Court on Monday 9 April 2018.
On Wednesday 11 April 2018, a 21-year-old man was arrested and conveyed to Mount Druitt Police Station.
He was later charged with affray and appeared at Mount Druitt Local Court on Thursday 12 April 2018, NSW Police say.
A 24-year-old man was arrested at Mount Druitt Police Station today (Monday 16 April 2018) where he was charged with affray.
He was bail refused to appear at Mount Druitt Local Court today, where he was again refused bail to re-appear at the same court on Wednesday 9 May 2018.
Anyone with information that may assist investigators is urged to come forward.
Police are urging anyone with information in relation to this incident to call Crime Stoppers.