Authorities say a crash that killed two adults and two small children was no accident , but a murder-suicide . On Dec. 23 Ulysses Montero , 25 , was driving with his girlfriend Julie Lopez-Elias , 24 , and two of their three children Julissa Montero , 4 , and five-day-old Delias Montero when the vehicle crashed into a retention pond in Kissimmee , Florida , WFTV reports . Though the crash was initially believed to be an accident , an autopsy report declared Montero 's manner of death a suicide and the others ' homicides . Purposely : Police say Ulysses Montero ( left ) purposely drove a vehicle carrying his girlfriend Julie Lopez-Elias ( right ) and two of their children into a retention pond in December 2014 . Stacie Miller , a spokeswoman for the Kissimmee Police Department , told the Orlando Sentinel that the medical examiner determined there was no indication that Montero suffered a 'medical episode ' prior to the crash . 'It was determined that the driver had physical control of the vehicle prior to entering the pond and that his actions were deliberate and not accidental , ' she said . A mechanic determined the car did not have mechanical deficiencies , police say , and video evidence of the crash shows no other vehicles were involved in the incident , WFTV reports . The medical examiner determined that Lopez-Elias and the two children died from drowning . Children : Two of the couple 's children , Julissa Montero , 4 , ( photographed ) and five-day-old Delias Montero were in the vehicle at the time , both died from drowning . Reconcile : Police said that Montero had been estranged from Lopez-Elias for months but the two were attempting to reconcile after the birth of their son , Delias ( photographed ) Investigators determined that Montero purposely drove the black , four-door Chevrolet into the pond on the Valencia College 's property . A witness called police after seeing the car run off the road and into the pond , but authorities were unable to rescue the family in time because the water was too deep and murky , the Sentinel reports . Lopez-Elias 's family created a fundraising page to cover funeral costs and has since raised more than $ 10,000 . The couple 's surviving seven-year-old son is in the care of Lopez-Elias 's mother , the Sentinel reports . Rescue : A witness called police after seeing the car run off the road and into the pond , but authorities were unable to rescue the family in time because the water was too deep and murky . Deliberately : Investigators determined that Montero purposely drove the black , four-door Chevrolet sedan into the pond on the Valencia College 's property . Anxiety : Montero 's family told the Sentinel that the 25-year-old had suffered severe anxiety since he was a child and sometimes he had to be hospitalized due to anxiety attacks . In the days following the incident , police said that Montero had been estranged from Lopez-Elias for months but the two were attempting to reconcile after the birth of their son , Delias . Montero 's family told the Sentinel that the 25-year-old had suffered severe anxiety since he was a child and sometimes he had to be hospitalized due to anxiety attacks . Montero and Lopez-Elias ' relationship was reportedly strained by Montero 's lengthy rap sheet which includes robbery , drug dealing , and illegal possession of a firearm . In February 2014 , Montero was arrested for slamming his car into Lopez-Elias ' . He had reportedly done so , with his two children in the car , because he was angry at Lopez-Elias for coming home late , .
Authorities say Ulysses Montero deliberately drove a car with his girlfriend , Julie Lopez-Elias , and two of his children into a pond in December . The crash was initially believed to be an accident but an autopsy recently declared Montero 's death a suicide . The couple 's four-year-old daughter and five-day-old son were killed in the crash .