Jefferson Parish Sheriff Newell Normand has asked federal authorities to investigate whether his officers used excessive force in their arrest this week of the young man accused of fatally shooting Deputy David F. Michel Jr. — an inquiry prompted by a cellphone video that shows deputies repeatedly striking the 19-year-old as they wrestled him into custody.

The alleged gunman, Jerman Neveaux, received an array of facial injuries during his arrest, including an orbital fracture, sending him to the hospital for two days.

A jail booking photo released Friday shows one of his eyes swollen partially shut and a number of scrapes and cuts, raising questions about the level of force deputies used a few hours after Neveaux allegedly gunned down one of their colleagues during a pedestrian stop in Harvey.

A local activist group, Justice & Beyond, assailed the arrest as “a throwback to Rodney King’s beating in Los Angeles” and called upon Normand to allow “independent doctors” to evaluate Neveaux.

A cellphone video obtained by WVUE-TV showed officers surrounding Neveaux and striking him in a backyard.

Follow Jim Mustian on Twitter, @JimMustian.