Gardaí will resume questioning a man today in connection with the discovery of a body in Co. Westmeath.
The body was discovered in a camper van in Lough Lene in Collinstown yesterday morning.
Gardaí upgraded their investigation to murder, following the results of a post mortem.
It' is believed the dead man was strangled during a row.
The 28-year-old man who was arrested under section 4 of the Criminal Justice Act yesterday can be detained until around midday today before being charged or released.