Larissa Bielby's family confirm teen is dead: 'Our family is utterly destroyed'

Police have arrested 34-year-old Zlatko Sikorsky.

Larissa Beilby's family have confirmed the missing Brisbane teenager is dead.

After holding grave concerns for the 16-year-old, who last made contact with her family and friends on June 18, her sister, Deanna revealed the heartbreaking news in an emotional Facebook post.

"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," read the June 30 message.

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

According to the Courier-Mail, police have confirmed that a body found in a barrel on the back of an abandoned ute in Stapylton, south of Brisbane on Wednesday as that of Ms Beilby. The body was discovered by a local woman who noticed a female's arm hanging from the container.

After barricading himself inside a Sunshine Coast apartment for 27-hours, Queensland man Zlatko Sikorsky, 34, surrendered to police around 6:30pm on Saturday, reports the ABC.

Zlatko Sikorsky has been arrested by police.

Police say Sikorsky and Larissa were "associated" and news reports suggest Sikorsky is expected to be charged with the murder.