All four members of a family, which went on a picnic Monday to Henry Hagg Lake in western Oregon, died from drowning, and their bodies were fished out by divers, according to local reports. The artificial lake is located about 35 miles west of the city of Portland.

The first body to be found, on Monday, was of a 3-year-old boy, and divers searching the lake found three more bodies the next day, the Washington County Sheriff’s Office reportedly said. The dead were identified as 42-year-old Jova Ixtacua-Castano; her 13-year-old son, Michael Garcia-Ixtacua; and her 25-year-old daughter, Gabriela Garcia-Ixtacua. The 3-year-old boy was identified as Jeremy Scholl, son of Gabriela Garcia-Ixtacua and grandson of Jova Ixtacua-Castano, according to an NBC report. The family reportedly lived together in Hillsboro, a suburb of Portland.

"Detectives found nothing suspicious and no signs of foul play. This appears to be a tragic incident where someone likely got into trouble in the water and others attempted to help them," Bob Ray, a sergeant with the Washington County Sheriff’s office reportedly said on Tuesday, adding: “Detectives are still searching for any answers that will help them understand the events that occurred yesterday evening to cause the deaths.”

Scholl reportedly showed no signs of trauma and an autopsy has been scheduled, a report said, citing the sheriff’s office said.

Rescuers found the three bodies in about eight feet of water, about 50 yards away from where the toddler's body was found, and none of the dead were found wearing life jackets. Rescuers also found a dog that belonged to the family near the lake.

After finding the young boy’s body on Monday, the search operation began at 10 a.m. Tuesday and the three other bodies were reportedly found just before 12 p.m. Authorities are still trying to determine how all four people ended up in the water.