Police are seeking information from the community relating to a break-in at Port Lincoln.
Patrols were called to Yardea Street at about 2.30pm on Tuesday, October 5, after reports a home was broken into.
Police will allege a man forced entry into a house and assaulted a 21-year-old man.
The victim was allegedly punched, assaulted with a metal pole and threatened with a homemade firearm. The victim suffered minor injuries and was treated at hospital.
After an investigation, police attended a Port Lincoln address and arrested a 29-year-old local man, who was charged with aggravated serious criminal trespass, assault and firearms offences.
A search of the suspect's house located a pistol crossbow and other prohibited weapons.
The man was refused bail and appeared in the Port Lincoln Magistrates Court, where he was remanded in custody to appear in the Adelaide Magistrates Court on Tuesday.
Police said this was not a random incident and that the pair involved were known to each other.
In relation to this incident, police are requesting anyone with dashcam vision of the Lincoln Highway between Normandy Place, Port Lincoln and Point Boston between 2.30pm and 4.00pm on Tuesday, October 5 to contact Crime Stoppers on 1800 333 000.