Ever since, stories about aswangs in the Philippines were always pointed to the Visayan islands, most especially in the Provinces of Iloilo, Capiz, Antique, and Aklan, as the origination. The known legend about Tiniente Gimo and Maria Labo came from them.
Maria Labo was the name used to refer to the female vampire who came from Iloilo or Capiz (others suggest from Sorsogon). She was popularized by the story that she murdered her two sons and then cooked them. She was recognizable by her huge scar across her face, thus she got her name.
Legend
It's my professor who gave me an idea about her. He even gave me the popular text message that terrorized people who receives it. Well, I also searched some of her stories and collected them here just to make a clear and whole tale about her life. When I found the “Ang Tatlong Katauhan ni Maria Labo”, it made me understand what actually happened to her. Until now, I am in search of the said article in a news paper that made her popular.
[Taken from Internet:]
A young woman named Maria went to Canada as a caregiver. There, she took care of an old man which, according to rumours, was possessed by the so-called "vampire" (some "aswang") curse.
When the old man died, he passed the curse (some say, his powers) to Maria. Finding no luck in Canada, Maria went home. It was then that her thirst for human flesh started. When her husband, a policeman, went home one night, he looked for their kids. The deranged Maria pointed to the stove where she had cooked their children. Enraged, her husband struck her with a bolo ("labo") where she obtained a scar on her face, earning her the monicker Maria Labo.
They said, she fled to Visayas, then to Mindanao, in a quest to satiate her hunger for human flesh and viscera. Like a typical aswang, she has the ability to change her appearance. Sometimes she appears as a beautiful young lady. At other times, she appears as an old woman.
[Taken from a Text Message:]
She was recently a saleslady in a mall (I don't know where specifically in the Philippines she is now), living as a normal person, and whenever you remember abruptly about her at exactly 3 in the morning and afternoon, she'll suddenly appear in front of you then kill you. Some said, she has a cellphone number. (I don't know what will happen if you'll call her.)