SANTEE — A woman was killed early Wednesday morning after she lost control of her SUV and crashed into the front yard of a house. The woman was traveling south on North Magnolia Avenue just north of Mission Gorge Road at 2:25 a.m. in a red Dodge Durango when she veered across the four-lane road, sheriff’s Sgt. Scott Hill said. The SUV sheared off a power pole, hit a tree, rolled at least once and ended up on its passenger side, Hill said. The woman, who was not wearing a seat belt, was partially ejected and died at the scene, the sergeant said. Investigators do not know what caused the woman to lose control of the vehicle. Hill said they do believe she was driving too fast. It’s not yet known if drugs or alcohol were a factor. Deputies shut down North Magnolia between Mission Gorge and Mast Boulevard while they conducted the accident investigation. “There is quite a large collision scene we have here,” Hill said. No one at the home was injured. The residents told deputies they heard a loud noise, ran outside and then called 911. Three vehicles parked in the driveway were damaged by debris, Hill said. Power to the home was shut off so SDG&E crews could repair the pole but the accident did not cause any outages in the neighborhood, Hill said. The woman has not been identified. She appeared to be in her 40s, Hill said. Authorities expected to have the roadway shut down until at least 9 a.m.