The alleged police brutality case that sparked the Baltimore riots could be decided Monday
Nero was one of the arresting officers of Freddie Gray, a Baltimore man who died after suffering spinal injuries he is believed to have sustained in a police van following his arrest in April of last year.
Gray's death came amid a series of high-profile killings of black men by police officers in the US.
Peaceful protests in Baltimore after Gray's death quickly descended into chaos, with the situation growing so violent that the governor of Maryland declared Baltimore to be in a state of emergency and called in the National Guard.
Nero, who did not testify, plead not guilty to charges of second-degree assault, reckless endangerment, and two separate charges of misconduct in office. All of the charges are misdemeanors.
Prosecutors representing the State of Maryland claim that the officers failed to secure Gray with a seat belt, as was required by a policy change made only days earlier.
During Nero's trial, Capt. Justin Reynolds, a former training director for the Baltimore police who testified as an expert witness, said that it took two hands to secure a detainee's seatbelt, according to The Sun. As a result, he claimed, an officer could not secure the detainee without putting himself at risk. Reynolds admitted that he had seen detainees secured with seat belts in the vans before and that doing so was possible with a cooperative detainee.
On Thursday, the prosecution argued that it was not possible for Nero not to be aware of the potential risk of not securing Gray.
The Sun reported that Judge Williams seemed skeptical of the argument that Nero was in the wrong to touch Gray without probable cause.
"Every time there is an arrest without probable cause, it is a crime?" Williams asked Deputy State's Attorney Janice Bledsoe, according to The Sun. When Bledsoe said that the answer depended on the circumstance, Williams said "No, no, no, no" and repeated his question. He returned to the issue again later, noting that arrests "for which the the conduct of the officer is not objectively reasonable" have "all the elements of a crime."
The prosecution and defense agreed that nothing leading up to Gray's being handcuffed was illegal and that no assault was committed after Gray was searched. The Sun reported that, in doing so, the prosecution ceded arguments claiming Nero's decision to pursue Gray was wrong. The state argued that Nero's actions in the approximately three minutes prior to the search did constitute an assault since Nero had not attempted to gain information to justify the stop.
Five other officers have been charged in relation to Gray's arrest and death: William Porter, Caesar Goodman Jr., Garret Miller, Lt. Brian Rice, and Sgt. Alicia White. Goodson, Porter, Rice, and White face manslaughter charges, with Goodson, the van driver, facing an additional second-degree "depraved heart" homicide charge. All face second-degree assault, reckless endangerment charges, and misconduct in office charges. False imprisonment charges initially filed against three of the officers were dropped.
Porter's trial ended in a mistrial with a hung jury in December. His retrial is due in September. The other officers are all due to be tried in coming months.
Gray had come under the suspicion of officers Nero and Miller after he "fled unprovoked upon noticing police presence." During his arrest, police found on Gray what they claimed was an illegal switchblade. Prosecutors had initially contested that the knife was legal, but the argument was dropped after police cited a city code which they claimed it violated. Prosecutors then argued that police had not been aware of the knife when they detained Gray.
According to The Sun, however, the knife did not come up during testimony.