A third officer, Elouse Joseph, reportedly just watched the incident happen, but did not intervene.

Source: https://www.dailymail.co.uk/news/article-11779095/Moment-Miami-officers-grab-suspect-neck-drag-ground-handcuffed.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

Authorities have not yet explained what Hemphill's involvement in the incident was, but Hemphill's attorney, Lee Gerald, told BuzzFeed News that Hemphill was the third officer at the scene when they first stopped Nichols.

Source: https://www.buzzfeednews.com/article/annabetts/sixth-police-officer-relieved-duty-tyre-nichols-memphis

Hemphill was the third officer at the traffic stop that preceded the arrest but was not at the location where Nichols was beaten after he ran away.

Source: https://abcnews.go.com/US/wireStory/licenses-suspended-2-fired-emts-tyre-nichols-death-96881459

"I am satisfied that the (third officer) comported himself lawfully throughout his engagement with the (gunman)," Martino concluded.

Source: https://www.baytoday.ca/ontario-news/officers-fatally-ambushed-in-innisfil-ont-shooting-before-gunman-shot-himself-siu-6514855