Cop accused of baby murder to front court

A Queensland police officer accused of murdering his baby son will appear in a Brisbane court on Monday.

The 38-year-old senior constable was charged on Saturday - 18 months after his two-month-old son succumbed to significant injuries at bayside Victoria Point, south of Brisbane.

Police have defended the length of time it took for charges to be laid, given the death was immediately deemed suspicious.

Deputy Commissioner Steve Gollschewski has told reporters it took months to obtain and verify the expert evidence crucial to the case.

He also defended the decision not to publicly reveal that an officer had been suspended on suspicion of a child's murder.

Detectives needed to maintain "the integrity of the investigation", he told reporters on the weekend.

The officer had been on full pay since a month after the child's death, but that will be reviewed now he's been charged.

The accused will appear in the Brisbane Magistrates Court on Monday.