A tip-off has led to counter-terrorism police charging a teenager who was allegedly planning a violent act.

A spokesperson for Queensland Police said a tip was received on November 6 via the National Security Hotline.

They said the tip was in relation to a man who police allege was making plans for acts of violence, which prompted a police investigation.

On Friday, an 18-year-old from South Gladstone was arrested by Detectives from the Counter-Terrorism Investigation Group and charged with one count of planning to cause death or grievous bodily harm.

He was refused bail and is expected to appear in court on Saturday.

Police said there was no ongoing threat to the community.

Anyone with any information can contact Policelink using the online form, anonymously call Crime Stoppers on 1800 33 000, or reach the National Security Hotline on 1800 123 400.