Gerard Dundon, a senior member of the McCarthy-Dundon gang behind bars.

Gardai have arrested one of the main figures in one of Limerick's feuding criminal gangs on foot or a committal warrant.Gerard Dundon, a senior member of the McCarthy-Dundon gang, was being sought to serve a 10-month prison sentence for more than 30 road traffic offences.Reports this morning say he turned himself in to Gardai last night and is expected to be questioned about the murder of Shane Geoghegan last weekend.Detectives believe the McCarthy-Dundon gang was responsible for the fatal shooting of the Garryowen rugby player, who was apparently mistaken for a top drug dealer aligned to the rival Keane gang.