A South African woman who was detained and jailed in Sesheke, Zambia on 10 July in connection with her husband's murder, has been released, Beeld reported on Tuesday.

Estie Pienaar (33) was released due to a lack of evidence on Monday.

She was arrested in July, along with Malumbwa Nyambe (30) and the owner of the Nina Fishing Camp, Nicky Rossouw (50).

Pienaar and her husband Marius, who had only been married for eight months, were on holiday when he went missing, the newspaper reported.

His body was found a few days later, on a small island in the Zambezi river, with knife wounds to the throat and a head injury.

Nyambe, an employee at the fishing camp, was also released on Monday, but Rossouw remains in custody.

The court case has been referred to the High Court in Mongo, in the west of Zambia.

S Tembo, the state prosecutor in Sesheke, said on Monday that Pienaar and Nyambe's release did not necessarily mean that they were absolved of any wrongdoing.

"If the court finds that there is enough evidence to connect them to the case, they could be arrested again," he said.

According to Tembo, the circumstantial evidence against Rossouw was "a bit stronger".

Rossouw's son Freddie was distressed to hear that his father was not being released.

"They've got no proof whatsoever, they're just trying to pin this on him," he said.