A man was sentenced to two years in jail for delivering a punch that killed the popular fast food cashier, "Junior the Wendy’s Guy," a nickname by which University of Texas students knew Ishmael Mohammed Jr.

Nikolas Ray Eller, 39, pleaded guilty to aggravated assault with a deadly weapon on Wednesday as part of a plea deal his attorney negotiated with Travis County prosecutors. The deadly weapon condition was included to the original assault charge.

Court documents that detail the April 2016 incident say Eller approached Mohammed and others asking to buy drugs in the driveway of a public library in North Austin near Lamar Boulevard and West Rundberg Lane. Mohammed accused Eller of being a police officer, prompting Eller to knock Mohammed to the ground with a punch to the face. Witnesses gave conflicting accounts of what happened next, saying Eller either kicked or slapped Mohammed as he lay on the ground, court records show.

Mohammed, 60, died three days later at University Medical Center Brackenridge where doctors said he suffered from a massive brain hemorrhage.

News of his death hit hard at UT, where Mohammed was famous for taking lightning quick orders as a cashier at the Wendy’s in the Texas Union. His record-breaking speed was memorialized in a 2006 South by Southwest documentary that captures Mohammed comparing his job to a sport and likening his quick hands to those of Bruce Lee. Speaking in third person, he offered, "Junior puts the fast in fast food." Always upbeat, he worked there from 1999 to 2012.

But his life soon spiraled. Mohammed moved to New York City where his mother died and returned to Austin without a home.

The American-Statesman reported in December 2014 that a UT student set up a GoFundMe page after discovering Mohammed on the streets asking for money. The fundraising effort brought in $30,000. He was placed in short-term housing, according to The Daily Texan.

According to court documents, Eller had a previous theft conviction in 2010 in Oklahoma and served one year in prison. His sentence for killing Mohammed will be up two years after his May 2016 arrest.

He told police that he could not recall much of the night of the assault because he had been up for three or four days straight taking heroin, methamphetamine and Xanax and was also hearing voices.

Had the case gone to trial, prosecutor Katie Sweeten said only one of the two people who saw the fight would have been available to testify. Evidence included surveillance video from a nearby grocery store that showed Eller buying beer just before the fight, but not the fight itself.

An off-duty Austin police officer found Mohammed slumped over at a bus stop hours after the fight. Mohammed was bleeding from his nose and mouth and had a blown pupil, the arrest affidavit said.