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Queensland police are negotiating with a man who is holding his son hostage in a block of units on the Gold Coast.
The 16-year-old boy called police at 7am to say he was in danger.
Police can't say if the man holed up in the building on the Gold Coast Highway at Tugun is armed.
"It's unclear if he has any weapons," they say.
Negotiators are still trying to persuade the man (42) to free his son.
Police cannot confirm reports officers have entered the building.
Pictures from the scene show a heavy police presence.