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Input: A Twitter user posted what appears to be a screengrab and wrote that an ISIS affiliate group broadcast a video showing the October attack that killed Sgt. La David Johnson and three other U.S. Green Berets.
Sgt.  Johnson  and three other American soldiers were killed in an ambush in Niger on Oct. 4. (Joe Raedle/Getty Images)
 Johnson   25  was part of a 12-member Army special forces unit accompanying 30 Nigerien forces when they were attacked in a densely wooded area by as many as 50 militants.
 Johnson 's widow Myeshia Johnson is presented with a folded U.S. flag by a military honor guard member during the burial service at the Memorial Gardens East cemetery. (GASTON DE CARDENAS/AFP/Getty Images)
Remains of Sgt. La David Johnson found weeks after his funeral
The gap in time led to questions about whether  Johnson  was killed in the assault and not found  or if  he  was taken away by the enemy.
According to the officials  a medical examination concluded that  Johnson  was shot as many as 18 times.
It is believed  he  died in the attack and there were no indications  he  was shot at close range  or had been bound or taken prisoner  as several media reports have suggested.

Military probes photo purportedly showing soldier's remains