Second man arrested in Limerick murder investigation

A second man has been arrested as part of a murder investigation in Limerick.

He was detained in north Cork earlier today in relation to the fatal shooting of 21 year old Frank Ryan in Moyross last week.

The man in his 20's, is being held at Mayorstone Garda Station under Section 30 of the Offences Against the State Act and can be held for 48 hours.

Earlier this week gardaí arrested and questioned a man believed to have witnessed the killing of Mr Ryan.

That man was released without charge.