Police kept busy following allegations of assault amidst a dangerous week on Clarence Valley roads.

Clarence Valley motorists are being urged to slow down, drive to the conditions and exercise caution, regardless of how familiar they are travelling on local roads following a number of accidents, including one fatality, within the past 10 days.

On March 15, a 24-year-old Gulmarrad man was travelling west along Brooms Head Road at Taloumbi in a Holden Colorado utility when the vehicle left the road on the southern side and collided heavily with a large gumtree.

The incident occurred at 10:30pm.

Emergency services including police rescue and crime scene detectives attended the scene and found the man trapped in the vehicle.

Sadly, the driver sustained fatal injuries and died at the scene.

He was the sole occupant of the vehicle.

Investigations are continuing, although police are alleging speed may have been a factor, and a report is being prepared for the coroner.

Officers from the Coffs Clarence Police District and emergency services attended a residence in Smith Street, Grafton, around 1:40pm on March 16, after concerns were raised for the welfare of an occupant who was acting bizarrely.

When police arrived, they were confronted by a 24-year-old man who police claim threatened them while armed with a knife, before barricading himself in the house.

Neighbours were asked to stay clear of the area and a stand-off ensured as police continued to negotiate with the man for about an hour before he surrendered peacefully.

The man was the sole occupant of the house at the time.

He was later assessed by NSW Ambulance before undergoing a mental health assessment.

No officers were injured during the operation.

Later that afternoon, the Westpac Life Saver Rescue Helicopter was called to the scene of an accident on Seelands Hall Road shortly after 3pm, after a young man aged in his 20’s was involved in a serious collision.

The 24-year-old was riding a trailbike when he accelerated harshly and lost control, resulting in him being thrown from the bike and landing heavily on the road.

He was treated at the scene by an off-duty nurse who rendered assistance until police and NSW Ambulance arrived.

He was flown to Lismore Base Hospital with suspected spinal injuries.

Office in Charge of Grafton Police Station Nick Wiles confirmed the man was not wearing a helmet or any other form of safety gear.

Police are continuing their investigations in relation to a serious domestic violence incident which occurred in Boronia Crescent, Yamba, on March 17.

It is alleged a 26-year-old woman was repeatedly struck with a hammer.

Police responded and a crime scene was established while the victim received treatment for her injuries at Grafton Base Hospital.

Southbound traffic was held up for more than an hour on the Pacific Highway at Glenugie following a motorcycle crash on March 18.

Officer in Charge at Grafton Police Station Nick Wiles confirmed that shortly after 5pm, a blue Honda motorcycle ridden by a man in his 30’s and his 28-year-old female passenger veered right into the safety barrier on the shoulder of the highway.

They were both thrown from the motorcycle as a result of the collision.

The male sustained serious injuries while the woman sustained minor injuries.

Southbound lanes of the Pacific Highway remained closed for one hour and 15 minutes while police conducted their investigation of the scene.

The man and his female passenger were transported to Coffs Harbour Hospital.

Investigations are ongoing and anyone with information or dashcam footage is being urged to contact Grafton Police or Crimestoppers.

The Gwydir Highway remained closed for several hours on March 19 after two trucks, a semi-trailer and a Rural Fire Service vehicle, collided around 30km west of Jackadgery.

The incident occurred around 1:30pm and motorists were warned to avoid the area on Live Traffic NSW.

The RFS truck, which was carrying four RFS volunteers, flipped over during the collision.

Two of the crew members were transported to Glen Innes Hospital where the received treatment for minor injuries.

It is alleged they are not local RFS volunteers.

Investigations into the cause of the incident are ongoing.