02/11/2017 6:43 AM AEDT | Updated 02/11/2017 8:27 AM AEDT

Australian Drug Mule Cassie Sainsbury Sentenced To Six Years' Jail

She could be out of prison in three years with good behaviour.

Australian drug mule Cassie Sainsbury has been sentenced to six years behind bars after a Colombian judge approved a plea deal.

But given time served and good behaviour, she could be released in as little as 2.5 years. Sainsbury's lawyer Orlando Herrán told journalists it's likely she'd serve her sentence in Colombia, with the sentence possibly being reduced if she continues to teach English to other prisoners and keeps up her current record of good behaviour.

Sainbury's conditions will be reviewed periodically by a judge who will decide whether she is eligible for early release or home detention. If she does qualify for home detention, she will need to remain in Colombia on home arrest, with the support of an organisation or a family member.

Sainsbury had been facing decades in jail after she was caught trying to fly out of Bogata with nearly 6kg of cocaine hidden in headphones in her luggage.

A judge has accepted her version of events, that a mystery man named 'Angelo' had tricked her into transporting the drugs.

But author Rusty Young, told HuffPost Australia Sainsbury has been extremely lucky, and the media attention has worked in her favour.

"I've never seen a case put through this quickly. Typically there's a back log that can last months before they're even heard, so she's been very fortunate it's gone through that quickly," Young said.

Rusty Young
Rusty Young, pictured here in Bolivia, believes Sainsbury is incredibly lucky her case was pushed through so quickly.

"I initially predicted she would get between four-seven years. I always thought reports that she'd get up to 21 years were exaggerated – there is no way she'd get that kind of prison sentence for six kilograms of drugs."

Sainsbury's lawyers first attempt to strike a plea deal in July was rejected. But last month, the six year imprisonment deal had been struck and agreed on by both parties.

According to Nine News, at today's court appearance Sainsbury appeared calm as the judge handed down his decision. She was accompanied by her family in court and then left without making any comment to the waiting media.