Arturo Gatti's wife, Amanda Rodrigues is in police custody and is now a suspect in her husband’s death.
Police interrogated Gatti's wife and she reportedly made contradictory statements during questioning.
The AP reported, a spokeswoman for the Pernambuco state civil police said Gatti was apparently strangled with the strap of a purse, which was found with blood stains at the scene.
Acelino "Popo" Freitas, a friend of Arturo Gatti and Amanda, recently told reporters that the couple was having problems and were possibly going to separate.
The boxer was found dead Saturday in a seaside resort in Porto de Galinhas, Brazil where he was vacationing with his wife and their 10-month-old child.