The lawyer for an Australian woman charged with the murder of a Balinese policeman says his client alleges the officer attacked her.

Key points: Forensic examination will determine whether policeman's wounds were new

Forensic examination will determine whether policeman's wounds were new Beer bottle and surf board found at crime scene being examined

Beer bottle and surf board found at crime scene being examined Police have 100 days to build case against Connor and Taylor

Sara Connor, a 45-year-old mother of two from Byron Bay, and British man David James Taylor, have been detained for allegedly murdering local policeman Wayan Sudarsa.

He was found with 42 wounds to his body, including his head and neck, on Kuta Beach.

Lawyer Erwin Siregar said Connor alleged the police officer was lying on his stomach on the sand when she approached him and shook him, saying: "Where's my bag, where's my bag?"

"The victim bit her leg," Mr Siregar said.

Sara Connor is accused of murdering a Balinese policeman. ( Supplied )

But he said he did not know why.

When asked if it was assault, Mr Siregar said: "Yeah, because not only the leg, but also the hand."

Mr Siregar had earlier said he saw a bite mark on Connor's thigh.

Mr Siregar said Connor did not know Mr Sudarsa was wearing a police uniform.

"All she knew was that it was of the same colour," he said.

"She didn't know how the victim got to that position of lying on his stomach. That was just how she found him."

Suspects' wounds examined

Earlier, Denpasar Police Chief Hadi Purnomo said police performed forensic examinations on wounds suffered by Connor and Taylor to determine "whether the wounds are new or old".

Police officer Wayan Sudarsa was found with 42 wounds to his body. ( Supplied )

He also told the ABC blood from the site of the police officer's death had been examined.

"From the forensic lab result, we found two types of blood on the crime scene: the suspect's and the victim's," he said, without specifying whether he was referring to Connor or Taylor.

Mr Purnomo said broken glass from a bottle and a surfboard had been found at the crime scene and was being analysed by a forensics team.

Taylor's lawyer Haposan Sihombing said his client told police Mr Sudarsa had held Connor down in the sand and that she had screamed, attracting passersby who came to her aid.

He also said she had described him as a "bad cop".

But police said she denied that version of events.

"She promised that she will admit today that what she said yesterday was false information, he only carried out his duty," Police Chief Purnomo said.

David Taylor's lawyer said Connor has described him as a "bad cop". ( AAP: Putra Sinulingga )

Mr Siregar said Connor had arrived in Bali on last Tuesday and Taylor met her at the airport, where they bought beer before returning to the man's home-stay.

"Then they are going to the restaurant, she drank a beer, and then they are going to the beach with two beer bottles, one each," he said.

Mr Siregar said the man and woman had been kissing on the beach after arriving at 11:00pm and leaving about 3:00am.

Police Chief Purnomo said the policeman was: "not peeking, he was watching the situation, he only carried out his duty. Why would he wear his uniform if he was peeking?"

In a statement released by the Connor family over the weekend they said their thoughts and love are with their daughter, adding the Byron Bay community was "heartbroken" over reports she had been named a suspect.

"Our thoughts, hearts and love go out to Sara as she deals with this thoroughly tragic incident."

The statement said the community "to whom she has given so much" is offering all it can in return.

"Our hearts go out to Sara and her family and we will do all we can to help her through this very difficult time."

It is understood Connor and Taylor first met in Byron Bay, where Connor runs a pasta-making business and Taylor hosted a weekly radio show.

The son of the deceased police officer described his father as loving and friendly.

"When he was around we were so happy at home. He was a good leader for the family... it was his duty as a policeman, a duty given by the state, I must accept being left behind by my dad," Putu Yudi Chrismayuda said.

Police have up to 100 days to build their case against Connor and Taylor, who face a maximum of 15 years in jail.