A Colorado father was arrested after allegedly leaving his four-year-old daughter home alone in just a diaper with drug paraphernalia within her reach.

The child was spotted calling for help from a second-story balcony at a home in Boulder around 10.30pm on July 28.

When officers arrived, they were unable to enter the apartment via the front door as the girl was ‘too young to open it,’ according to Boulder Police.

Instead, they were forced to climb on to the hood of their patrol car before scaling the fence to reach the little girl.

‘Don’t break that,’ the little girl can be heard telling the officer in bodycam footage as he climbed over the fence.

‘I won’t break it!’ another officer said.

The officer can be heard banging on the glass sliding door, announcing himself, before the video cuts off.

Officers discovered plenty of marijuana and drug paraphernalia within the girl’s reach on the coffee table, police said in a statement.

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Boulder Police were called to an apartment building after receiving a report of a young girl in a diaper calling for help

Her father was arrested a day later with a lot of cash and cocaine on him, police said

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Her father was arrested a day later with a lot of cash and cocaine on him, police said

Officers called her father, Paul Wilson, 44, who allegedly told authorities he had left to go get food while his daughter was asleep.

When he was asked to return to the residence, he refused.

Officers then changed the little girl’s diaper, helped her get dressed, and drove her to the station, where she stayed until they could reach her mother. She was then driven to her mom’s house.

A day later, officers arrested the girl’s father outside of a bar, and was charged with child abuse, reckless endangerment, felony unlawful possession of cocaine, and felony drug distribution, police told the Daily Mail.

He was allegedly in possession of a large amount of cash and nearly 15 grams of cocaine, police said.

‘Y’all are f**king good at your job, man,’ the father told officers.

‘We’re glad this sweet child wasn’t hurt, and we hope she only remembers the kindness of everyone who helped her this week,’ police said in a statement.