New developments in murder case of Danbury resident Ana Barros

An arrest warrant was issued by Danbury Superior Court for 40-year old Daniel Costa charging him in connection with the stabbing death of his 55-year old aunt.

INTERPOL, an international police organization, says on it's website that Costa is wanted for crimes against life and health and theft.  Barros' body was discovered in May buried in the basement of the house she and her nephew shared.

Costa is believed to be in Portugal.  He left for that country 3 days before another relative reported Barros missing. 

Her body was found two weeks later, wrapped in plastic, under a newly poured concrete floor. 

Here is the reprot from INTERPOL: