The son of a man whose body was found on his girlfriend’s farm has said he knew something wasn't right when he called over to her house looking for him.

He was giving evidence at the trial of Patrick Quirke from Breanshamore, County Tipperary – who denies murdering Bobby Ryan sometime after June 3rd 2011.

Last week, Patrick Quirke’s ex-lover Mary Lowry told the jury she was mad about local DJ Bobby Ryan.

She said she met Mr Ryan in 2010 – a month or so after she brought an end to what she described as a “seedy affair” with the accused.

She spoke about the efforts to find Mr Ryan when he went missing on June 3rd 2011, after spending the night with her.

It is the prosecution’s case that Mr Quirke murdered the 52-year-old and then “staged” the discovery of his remains in a run-off tank on Mrs Lowry’s farm almost two years later.

Today, Mr Ryan’s son Bobby Jnr said he drove out to Mary’s farm after his father didn't show up for work the day he went missing.

He said she wasn't in the yard when he first drove in but appeared at one of her sheds looking “very shaken, upset and emotional.”

He said she was “shaking” as if she’d just seen a car crash and he knew something wasn't right by the way she was acting.

The trial continues.