Queensland police have upgraded the charges against a man accused of fatally king hitting his father.

Morgan Isles-English, 25, was charged with grievous bodily harm after he allegedly punched his father Mark, 53, in Brisbane on Monday afternoon.

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But the man’s father subsequently died in hospital on Tuesday.

Early on Wednesday police upgraded Isles-English’s charge to unlawful striking causing death and appeared in Brisbane Magistrates Court on Wednesday.

The Courier Mail reported that Isles-English sobbed in court when he appeared in court and paced paced back and forth in the dock, crying out to a woman in the public gallery that “I love you, Mum” and asking whether “he was awake”.

Isles-English’s lawyer Brendan Beavon did not make an application for bail and requested the matter be adjourned to next month.

– with News Corp.