A NSW university urged its students and staff to stay inside as it and a nearby school are locked down and police warn people to avoid the area.
Police have given the all-clear after Southern Cross University's Lismore campus was locked down and evacuated following threatening phone calls.
A building by building search was carried out by police on Tuesday afternoon, after officers earlier arrived at the scene and urged staff and students to stay inside.
NSW Police Force confirmed "threatening phone calls were recieved" by the university about 1.30pm.
"There have been no reports of injury of shots fired," police said in a statement.
About 3pm Southern Cross University tweeted its Lismore campus was in "emergency lockdown" and that "police are currently on-site and all students and staff are advised to remain inside until given the all-clear".
"Anyone planning to visit the campus at present should postpone."
By 5.30pm the university confirmed the situation was in hand.
At least one person took to social media claiming they had heard reports of an "active shooter" on campus, but police quickly dismissed the reports.
He confirmed the campus was now safe for students and staff.
The Rivers Secondary College Lismore High Campus also posted that it was in lockdown due to "an unfolding matter at the university".
"Students are safe and the school will remain in lockdown until advised by police. Please do not attempt to collect your child. We will update you when possible," it said in a post to Facebook.
Police continue to investigate the incident.