A boy, 4, fell to his death from the balcony of his family's fourth-floor apartment in Ajman.
The child was trying to climb the wall of the balcony while his mother was attending to his younger sibling when he fell.
The incident took place at about midday on Sunday.
Emergency services were alerted by the security guard of a nearby building.
Police patrols and ambulance rushed to the area, but the child was pronounced dead at the scene.
Police have ruled out negligence as a contributing factor to the death and said sufficient safety procedures were in place.
"We visited the flat and the balcony was found to be in compliance with safety procedures," said Lt Col Gaith Al Kaabi, head of Al Nuaimiyah Police Station.
The mother was putting her younger child to sleep when the boy fell, police said.
The child’s father, a teacher at a private school in Sharjah, was informed of the news while at work.
The school posted its condolences to the parents on its official Facebook account.
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