A body found earlier this week in the San Juan River about a quarter mile from Nenahnezad Chapter House in Fruitland on the Navajo Nation was a Native American in his 30s, according to the FBI.

FBI Media Coordinator Frank Fisher said the agency will not identify the man until an autopsy is completed.

The cause of death will be determined by the autopsy, Fisher said, but he added that the man had no obvious signs of trauma.

"If this guy had a bullet in the head, we'd know it," he said.

The man was fully dressed and had been in the river a short time when authorities arrived, Fisher said.

Fisher said a Navajo male who lives in the area has been missing from home for 5 days, and it is possible he is the man who was found in the river.

San Juan County Sheriff Office deputies and Navajo Nation police initially responded to the scene on Tuesday and then called the FBI.

Dan Schwartz covers government for The Daily Times. He can be reached at 505-564-4606 and dschwartz@daily-times.com. Follow him @dtdschwartz on Twitter.