Ananova:

Rod Stewart kicked a football off the stage - and reportedly hit the father-in-law of top DJ Paul Oakenfold.

Vincenzo Costa, 61, was hit on the side of the head as he left Los Angeles' Hollywood Bowl, says The Sun.

Daughter Angela said he went into convulsions on a stretcher and had to be rushed to hospital.

Now Paul is threatening to sue Rod unless the family gets an apology.

He spent £300 on tickets for Vincenzo and wife Rita, 60, during a trip to the US from their home in Gants Hill, East London.

Actress Angela was waiting to pick the couple up when Rita phoned from a first aid post.

Angela said: "Dad was in an awful state. I was terrified he'd have a heart attack."

Hospital doctors carried out four hours of tests before sending Vincenzo home with painkillers.

A spokesman for Rod, 59, said: "We have no details of this incident but will investigate when we have."