A semi-retired businessman accused of trying to murder his wife made a new court bid from jail — before it was swiftly cancelled.

Stephan Wagner, 62, allegedly brewed cups of tea laced with insecticide, Ant-Rid, for his wife, Glenda, 66, for more than 18 months, leading to her health severely deteriorating.

He has been in custody since he was arrested at his St Andrews home, in Sydney’s southwest, in October last year.

Know the news with the 7NEWS app: Download today

But the father-of-two’s legal team last month made a move to have his custody arrangements assessed.

www.20304050.best can reveal Wagner’s case was listed for a bail review in Campbelltown Local Court on July 25.

However, the matter was abruptly vacated by the court before it was scheduled to take place.

The development comes after it was revealed in April that Wagner’s charges had been changed.

He was originally charged with administering poison, administering poison with intent to murder, and using poison to inflict bodily harm.

However, the charge of using poison to inflict bodily harm had been withdrawn, and Wagner now faces a new charge of using poison with the intention to injure or cause distress.

Police will allege Wagner spent almost two years poisoning his wife — between December 2022 and September 2024 — until their adult children became suspicious and alerted authorities.

Since his arrest, Wagner has also been charged with two counts of allegedly breaching an AVO taken out to protect his wife by writing her letters from prison.

Under the conditions of the AVO, Wagner cannot try to contact her in any way, try to find her, and cannot go within 1km of her home or workplace.

He also must not assault, threaten, stalk, harass, or intimidate her or anyone she has a domestic relationship with, harm her pets, or intentionally or recklessly destroy or damage her property.

However, police will allege he breached the AVO twice from prison — in late October then again in January.

Wagner is due to next face Campbelltown Local Court later on Wednesday.