Zlatko Sikorsky - accused of killing Larissa Beilby - is hit with 16 new charges

Larissa Beilby's accused killer has been hit with a string of additional charges

Larissa Beilby's accused killer has been hit with a string of additional charges

Larissa Beilby's accused killer has been hit with a string of additional charges as he prepares to argue the teenager wasn't murdered, but died through 'misadventure'.

Zlatko Sikorsky initially faced one count each of murder and interfering with a corpse after the 16-year-old's body was last week found dumped in a barrel on the back of a ute at a housing estate at Stapylton, south of Brisbane.

The 34-year-old has since been charged with 16 other offences - including drug and dangerous weapon possession and two counts of possessing tainted property.

Sikorsky will also face one count each of dangerous operation of a vehicle, unlawful use of a motor vehicle and obstructing a police officer.

His defence team is reportedly preparing to argue Larissa's death was a tragic accident.

'I absolutely believe he's innocent, and I've been doing this a long time,' Sikorsky's lawyer Brendan Ryan told the ABC.

Zlatko Sikorsky initially faced one count each of murder and interfering with a corpse after the 16-year-old's body was last week found

Zlatko Sikorsky initially faced one count each of murder and interfering with a corpse after the 16-year-old's body was last week found

The 34-year-old (pictured in custody has since been charged with 16 other offences

The 34-year-old (pictured in custody has since been charged with 16 other offences

'I think that when [the police] have done their job… they will discover he didn't commit the murder... it isn't a murder.

'If they dot their Is and cross their Ts they will discover that he didn't do anything and rather she may well have passed through misadventure.'

Larissa was last seen in the north Brisbane suburb of Sandgate on June 15.

She was reported missing by her father Peter Beilby on Tuesday, a day before police discovered her body in a barrel placed on the tray of the abandoned ute.

Larissa (pictured in 2016) was reported missing by her father Peter Beilby on Tuesday last week

Larissa (pictured in 2016) was reported missing by her father Peter Beilby on Tuesday last week

Larissa (pictured) was last seen in the north Brisbane suburb of Sandgate on June 15

Larissa (pictured) was last seen in the north Brisbane suburb of Sandgate on June 15

Despite reports the body was Larissa's, the family had held on to hope until a formal identification came from police on Saturday.

'With a broken heart shattered into more than a million pieces our family is utterly destroyed to inform you all that Larissa has been taken from us,' Larissa's sister Deanna posted on Facebook on Sunday.

'Our beautiful girl has been reunited with our beloved wife and mother. Fly high our darling angel, until we see you again Rissy.'

A massive manhunt for Sikorsky was sparked after the corpse was found on Wednesday.

Sikorsky attempted to cover his face after the 28 hour Sunshine Coast siege came to an end

Sikorsky attempted to cover his face after the 28 hour Sunshine Coast siege came to an end

SERT officers pictured at the scene of a police operation at Alexandra Heads on the Sunshine Coast on Saturday

SERT officers pictured at the scene of a police operation at Alexandra Heads on the Sunshine Coast on Saturday

Sikorsky was on Friday cornered by heavily-armed police at a unit block in Alexandra Headland on Queensland's Sunshine Coast during a 28-hour siege.

He gave himself up to police about 6.30pm on Saturday.

Sikorsky covered his face as he was taken to a Maroochydore police station following the standoff.

A 40-year-old woman and 38-year-old

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