UNION CITY - Police are investigating who stabbed a woman to death in her Union City apartment.

Officials say Mercedes Perez was found in her apartment on 29th Street.

Her husband, Vidal Perez, was also injured and taken to the hospital for treatment, according to police.

The Perez's niece and grand niece say they were the ones who found the couple.

Police say they have not yet ruled out her husband.