Northern Territory Police have arrested a man in relation to a serious harm incident in Darwin City yesterday afternoon.

Around 5:15pm, police received a report that a man had allegedly been pushed from a second floor balcony at a residence on Smith Street, Darwin City.

Upon emergency services arrival, a 46-year-old man was located with serious injuries and conveyed to Royal Darwin Hospital for treatment.

A 35-year-old man was located at the scene and arrested without incident. He currently remains in custody assisting police with enquiries.

Detectives are urging anyone who witnessed the incident to make contact on 131 444. Please quote reference NTP2400042375.

Anonymous reports can also be made through Crime Stoppers on 1800 333 000 or via https://crimestoppersnt.com.au/.