Simon Peter Carman appeared in a Pattaya court on Friday charged with killing Tunchanok Donhomla

An Australian man accused of murdering a Thai teenager and putting her body in a suitcase pleaded not guilty on Friday in a hearing in the seaside resort city of Pattaya, a court official said.

Simon Peter Carman, 45, was arrested in June after 17-year-old Tunchanok Donhomla was reported missing in Pattaya City, about 150km south-east of Bangkok. A suitcase containing her body was found shortly after.