A Brazilian influencer is being mourned this week after being killed over the weekend following a stabbing attack allegedly perpetrated by her boyfriend's ex-girlfriend. Maria Luiza Costa da Silva, who was known online as "Malu Costantine," was just 18, according to local media outlets, including g1 and Metrópoles. Both reported that the deadly attack happened on Saturday, January 31. Maria's boyfriend, Gabryel Nascimento da Silva, allegedly spoke to investigators afterwards, and said that he and Maria were leaving a bar in Recife, Brazil, on Saturday when they ran into his ex, identified as Kallyne Santos da Silva. Gabryel and Maria had been attending a pre-Carnival event by Bloco do Papada staged inside the bar, the outlets reported. A Military Police arrest report that was obtained by g1 alleged that Gabryel told police that the three of them began arguing outside the bar. Suddenly, he said, Kallyne had a knife and started repeatedly stabbing Maria. Brazilian Influencer Dies After Falling From Balcony, Husband Arrested Gabryel, 27, said that when he tried to defend Maria, his ex then turned and stabbed him in the thigh, according to reports. He allegedly told police that Maria ended the tragic altercation by grabbing the knife and then stabbing Kallyne in the stomach with it, according to g1. Maria and Gabryel were transported to a local emergency room by a stranger who drove them in his car, according to reports. Maria is said to have died as medical professionals started working on her wounds. Gabryel was treated for his thigh injury and released from the hospital, authorities said. Military police said that an injured Kallyne had fled the scene before authorities could arrive but was later located by cops at an emergency room, where she was seeking medical treatment for the stab wound. She was ultimately transferred to a different hospital, where she is being held without bond, the outlets confirmed. Why Are So Many Influencers Dying? Expert Explains It Seems 'Like a Trend' It was unclear on Wednesday, February 4, if Kallyne had been charged with any crimes yet. However, the case is being handled as a homicide, reported g1, and is still said to be ongoing and active. Maria was a well-known South American content creator who had nearly 30,000 followers on Instagram alone. Her account was set to private upon her death, Us Weekly has learned. In a statement issued on Sunday, February 1, Bloco do Papada expressed "solidarity with the tragedy that affected young Luiza. We join in the grief of her family and friends in this moment of immense sadness, wishing strength and comfort to all." The organization also clarified that the alleged stabbing attack was "an isolated incident" and unfolded two hours after the official ending of their event. "Bloco do Papada reaffirms its commitment to a carnival of peace, respect, and responsibility," the statement added. "Acts of violence do not represent the values of the festival, nor the popular culture that we have defended for 10 years. We remain confident in the work of the authorities and reiterate the importance of carnival always being a space of joy, coexistence, and preservation of life."