A professional female bodybuilder was beaten to death with a hammer at her luxury Costa del Sol home before her muscleman husband killed himself using a knife, police believe.

Colombian bodybuilding champion Zunilda Hoyos Mendez, who also went by the name Amy, was found dead yesterday afternoon after detectives went to the property on an upmarket residential estate in the popular Spanish resort of Fuengirola.

The body of her partner, named as 46-year-old Jarrod Gelling, was found in a bathroom with what police have described in an initial statement as 'apparent self-inflicted stab wounds.'

Zunilda, who was dubbed Colombian She-Hulk, had been missing since Saturday after flying to the Costa del Sol from Dubai, where the couple reportedly spent much of their time.

Her relatives described Jarrod overnight as 'aggressive' and said they believe he could have lashed out after she told him she wanted a divorce.