Gardaí investigating the theft of livestock in Co Westmeath three months ago said in a statement that they have arrested a man in his 30s in Co Donegal today (Thursday).The arrest took place during a planned operation and the man is currently detained at Ballyshannon Garda Station under Section 4 of the Criminal Justice Act 1984. The legislation allows gardaí to question a person for two periods of up to six hours each, to investigate offences punishable by prison sentences of five years or more.