BRYAN, Texas (CBSDFW.COM/AP) – A small plane that crashed last weekend in Texas, killing three family members and injuring another person, had just taken off from the airport, federal officials said.

The National Transportation Safety Board said in a preliminary report Thursday that the pilot had purchased the Piper PA-24-250 airplane about a week earlier.

READ MORE: Cecile Richards: Supreme Court's Inaction On Texas Abortion Law Could Mean End Of Roe

The plane crashed Sunday afternoon at Coulter Airfield in Bryan, about 85 miles northwest of Houston.

Three people were killed and one person was injured in a plane crash in Bryan, Texas. (Credit: KBTX)

The NTSB said it came to rest on a grass field on the end of a runway.

Bryan Police identified those killed as 21-year-old Victoria Walker and her parents, 54-year-old David Walker and 51-year-old Tamara Walker.

READ MORE: 'Kids Aren't That Careful At School': Teen Twins Get Vaccinated At Fair Park

Police have said the injured person wasn’t related to the family.

The NTSB said that person suffered serious injuries.

The four people aboard the plane had planned to do a sightseeing flight in the local area, according to the agency.

Police said the Walkers were from Farmersville, about 40 miles northeast of Dallas.

MORE NEWS: Amber Alert Issued For 12-Year-Old Girl Out Of Converse, Texas

(© Copyright 2020 CBS Broadcasting Inc. All Rights Reserved. The Associated Press contributed to this report.)