CONCHO, Okla. - Early this morning, multiple fire crews were on scene of a three-building fire on tribal land.
Members of the executive branch are calling this an invasive and vicious attack.
The fires started near the headquarters of the Cheyenne and Arapaho Tribes in Canadian County around 2:30 a.m.
Fire crews battled flames at an office building, the courthouse and a maintenance warehouse.
Officials say the maintenance warehouse was leveled by the flames.
The Bureau of Indian Affairs believes these fire are connected.
"This is a cowardly, heinous act," said Governor Eddie Hamilton, Executive Branch Cheyenne & Arapaho Tribes." It was a devastation to us."
Shortly after the fires broke out, the economic development building by Lucky Star Casino was also damaged, not by fire, but by a massive vehicle.
"There was a tanker truck that actually went through the building, destroyed it and is sitting in the revene behind," said Hamilton.
The tanker truck does not belong to the tribe.
Investigators are treating this as a separate incident.
Right now the Cheyenne and Arapaho tribes are reviewing surveillance video hoping for clues.
"We need their help to catch whoever did this, if they know anything, to help with the investigation," said Hamilton.
In the meantime, security is being stepped up on tribal land.
"It's one that won't deter us from actually carrying forward to provide our services we have for our people here in Concho," said Hamilton.
Last week, tribal leaders with the Cheyenne and Arapaho Tribes said they believe the drug cartels have been targeting their people and their land.
Although they have no proof this is retaliation in connection to their announcement, it is part of their investigation.