The man who was struck and killed on N.M. 599 on Thursday night and then run over by several vehicles, including that of the New Mexico secretary of state, was identified Sunday as Eric Broncho, 46, of Santa Clara Pueblo.

Santa Fe Police Captain Aric Wheeler said Broncho was struck at about 7:30 p.m. as he was walking alone in the right southbound lane of the highway near Camino La Tierra.

His body was then hit by at least three other vehicles, including that of Secretary of State Dianna Duran.

In a statement Friday, Duran said she thought she had run over an animal, and then was shocked later to discover it was a person.

Wheeler said Sunday that toxicology tests were being conducted to determine whether Broncho had been impaired by alcohol or drugs. The tests are expected to take about two weeks.

Police were still asking motorists who may have struck Broncho or driven through the scene to call police at 505-428-3710.

Wheeler said it's unlikely anyone will be charged because "the underlying reason seems to be the actions of the individual himself."

Investigators said previously that Broncho was hit by a silver BMW after another vehicle narrowly avoided him. The driver of the BMW was not identified.

Police said Duran's personal blue Honda Accord was likely the third vehicle to strike Broncho. An 18-wheel tractor trailer rig was one of the four vehicles identified, but it's likely that other cars hit Broncho as well, Wheeler said, bringing the total to possibly six or seven.

Duran's chief of staff, Ken Ortiz, said she left the scene even though other drivers stayed behind because she was unaware that it was a person who had been hit, and thought it safer to go home and call police from there.

In an email, Ortiz wrote that "another car, not a policeman, followed her for a while and flashed its headlights, but she decided it was safer to go home rather than pull over."

Ortiz said Duran had previously stopped for a few minutes to make sure her car was running properly.

The southbound lanes of the highway remained closed until 9 a.m. Friday.