Britney Spears’ father will not face action over allegations he physically assaulted the pop star’s son, prosecutors say.
Jamie Spears was accused of grabbing and shaking his 13-year-old grandson Sean last month.
The child’s father, Kevin Federline, alleged that Mr Spears was involved in a physical altercation with Sean on 24 August.
Mr Federline, a former backing dancer who was married to Britney Spears from 2004 to 2007, filed a police report against his former father-in-law.
He said 12-year-old Jayden, his second son with Ms Spears, was also in the house at the time of the alleged incident.
But California authorities decided not to take action and a statement from the Ventura County District Attorney’s Office said there was “insufficient proof” a crime had been committed.
Mr Federline obtained a restraining order against Mr Spears following the alleged incident, according to NBC News.