From left to right: Helena Ferreira de Freitas Santos, Núbia Alves Brito, Marinalva Alves da Silva and Maria de Fátima da Costa Boaventura Reproduction/Social networks/Montage g1 The Civil Police of Maranhão suspect that the four friends who died in an accident on BR-226, on the morning of this Thursday (9), were victims of drowning. The car in which they were traveling fell into a lake after an attempt to overtake, near Grajaú (MA), as reported by the Maranhão Fire Department. The victims — Helena Ferreira de Freitas, Núbia Alves Brito, Maria de Fátima da Costa Boaventura and Marinalva Alves da Silva — were close friends and had planned a trip from Araguaína, in the northern region of Tocantins, to Barra Grande, on the coast of Piauí, where they would celebrate a reunion. Marinalva, who lived in Ireland, had recently returned to Brazil to visit her family. The information was confirmed by her niece, Rebeca Silva. According to the Maranhão Civil Police, the driver lost control of the steering wheel, the car overturned and fell into a cliff, becoming completely submerged in a lagoon on the banks of the highway. The car was driven by Núbia Alves Brito. According to the Maranhão Public Security Secretariat (SSP-MA), investigator Mário Kempes, who responded to the incident, reported that the vehicle quickly submerged. "There is evidence that the four occupants probably died from drowning, as the vehicle remained submerged after the accident," he said. Four people from TO die in an accident in Maranhão ? Click here to follow the g1 TO channel on WhatsApp Vehicle fell into a lagoon on the banks of BR 226 Disclosure/CBM READ ALSO: Accident leaves four dead on BR-226 in MA; victims are from Tocantins Victims of an accident with a car that fell into a lake on BR-226 are identified Friends who died in an accident on BR-226 were traveling to spend holidays in Piauí, says family Wakes and burials According to the family, the bodies of Marinalva Alves da Silva and Núbia Alves Brito were laid to rest together at Marinalva's house, in Araguaína, this Friday (10). Marinalva's burial, however, should only take place this Saturday (11), after the arrival of her daughter, who lives in Europe and travels to Brazil to say goodbye to her mother. The other two victims were also laid to rest this Friday, in Araguaína. The body of Helena Ferreira de Freitas Santos, who was a member of the University of Maturity (UMA/UFT), must be buried at 4pm. The funeral of hairdresser Maria de Fátima da Costa Boaventura is scheduled to take place at 5pm. Friends die in accident on BR-226 Arte g1 See more news from the region on g1 Tocantins.