'Tongo's testimony not worth the paper it's written on'

Francois van Zyl said Tongo’s testimony is highly improbable and riddled with contradictions.

FILE: Zola Tongo covers his head as he prepares to face murder charges in the Cape High Court. Picture: AFP.

CAPE TOWN - Shrien Dewani's lawyer, Francois Van Zyl, has concluded in the Western Cape High Court that there's no credible evidence left on record implicating the British businessman in his wife's murder to convict him.

Van Zyl spent the day trying to convince to Judge Jeanette Traverso that his client should be discharged.

He said the evidence of the state's star witness, Zola Tongo, is inherently not worth the paper it's written on.

Dewani is accused of hiring Tongo to recruit hitmen to kill his wife, Anni Hindocha Dewani, during the couple's honeymoon in Cape Town in November 2010.

Tongo is the man responsible for organising the alleged staged hijacking in which Anni was killed and has blamed the British businessman for being the alleged mastermind behind the murder.

Van Zyl spent much of today detailing why Tongo can't be trusted.

He said Tongo's testimony is highly improbable and riddled with contradictions on virtually every material aspect.

Van Zyl said Tongo twisted his evidence to try and fit in with CCTV footage, which was used by the state in a bit to bolster its case against Dewani.

WATCH: CCTV footage of couple shown in court.

Tongo and hitmen, Mziwamadoda Qwabe and the late Xolile Mngeni were jailed for their role in Anni's murder.

Earlier, Van Zyl argued the fact that Dewani would ask Tongo about a hit approximately 30 minutes after meeting him is highly improbable.

He said it's even more improbable that Tongo, who had never been involved in any criminal activity before, would immediately agree to contact his friend to find a contract killer.

The prosecution will also be given a chance to respond to Van Zyl's argument.

Dewani has pleaded not guilty to charges including kidnapping, murder and defeating the ends of justice.

His lawyers are calling for his discharge and acquittal in terms of section 174 of the Criminal Procedure Act.

Judge Jeanette Traverso has to decide whether the case should be dismissed or not.

Dewani was extradited from Britain in April after losing a three-year battle to avoid trial in South Africa.

His mental health has been a topic of concern over the last few years but in August he was deemed fit to stand trial by a panel of experts who had been observing him at the Valkenberg Psychiatric Hospital in Pinelands.

He was initially said to be suffering from post-traumatic stress and depression.

WATCH: Dewani's defence lays out argument for acquittal.

Click here to view the heads of argument.

For more on the honeymoon murder trial, click here.