The third man involved in an armed robbery of the Mobil Service Station in Waihi has been sentenced to four years in prison.

Jeremiah Reti, 19, was sentenced in Tauranga District Court today after earlier admitting to one count of assault with intent to rob.

Jeremiah Reti was sentenced in Tauranga District Court today.

During the earlier appearance, Reti also pleaded guilty to threatening to kill and assault with intent to injure in relation to a separate incident in Te Aroha.

Co-offender George Matthews was found guilty in February of being one of the three masked men, along with Jeremiah Reti and Rataman Rapatini, who brandished weapons, either a claw hammer or an imitation pistol during the attempted robbery at the petrol station in Waihi on June 18, 2012.

Matthews was also found guilty of being the second man involved in the attempted robbery of the Park Road Dairy in Katikati on the same day.

He was sentenced to six years prison on April 1, 2014. Read more here.

Rapatini pleaded guilty to two counts of assault with intent to rob for his role in the offending and was sentenced to six years on January 17, 2013.

During sentencing today, Judge Thomas Ingram said an inability to manage his emotions, deal with alcohol or drugs, and poor quality of associates, led Reti to where he was today.

Reti has been in custody since May when he breached bail on charges relating to the assault in Te Aroha in 2011, where Reti was charged with threatening to kill and assault with intent to injure.

'You lost your temper in relation to a young lady and a man, and there was a pretty serious assault," says Judge Ingram.

"The jail sentence is inevitable on the aggravated robbery charge and in the Western Bay of Plenty it is inevitable."

Judge Ingram said for the 10 years he had been in Tauranga, police have caught every armed robber.

"You all get caught, and you all get sent to prison.”