A police officer who shot a 12-year-old dead in a Cleveland park late last month had been judged unfit for police service two years earlier by a small suburban force where he worked for six months, according to records released on Wednesday.

Officer Timothy Loehmann, who killed Tamir Rice on 22 November, was specifically faulted for breaking down emotionally while handling a live gun. During a training episode at a firing range, Loehmann was reported to be “distracted and weepy” and incommunicative. “His handgun performance was dismal,” deputy chief Jim Polak of the Independence, Ohio, police department wrote in an internal memo.

The memo concludes with a recommendation that Loehmann be “released from the employment of the City of Independence”. Less than a week later, on 3 December 2012, Loehmann resigned.

In March of this year, Loehmann was hired by the Cleveland police department. It is unclear whether the department had seen the Independence memo at the time of Loehmann’s hiring.

“I have not received any instruction about it, and I have not received the file” from Independence, said Sgt Ali Pillow, a Cleveland police spokesman. He said the Cleveland department had not commented on whether it had seen the memo from Independence before Loehmann was hired.

On a Saturday afternoon last month, Loehmann and a partner, Frank Garmack, were dispatched to Cleveland’s Cudell Commons Park after a 911 caller reported “a guy” in the park was pointing a “probably fake” gun at people. Surveillance video recovered after the incident showed Tamir Rice, the 12-year-old, handling a pistol-sized pellet gun.

Loehmann shot the boy dead within two seconds of a police car driven by Garmack arriving to the park and pulling to a stop within feet of the child. In the video, released by Cleveland police a week ago, Loehmann appears to fire his gun as he opens the door to leave the police car.

Loehmann has been taken off patrol duties in Cleveland and the shooting is under internal review.

The Independence police memo describes an episode in which a supervising officer suspended gun training with Loehmann after Loehmann had an emotional breakdown about a girlfriend.

“During a state range qualification course, Ptl Loehmann was distracted and weepy,” Polak wrote, naming the trainer as Sgt Tinnirello. “[Loehmann] could not follow simple directions, could not communicate clear thoughts nor recollections, and his handgun performance was dismal. Sgt Tinnirello tried to work through this with Ptl Loehmann by giving him some time. But, after some talking it was clear to Sgt Tinnirello that the recruit was just not mentally prepared to be doing firearm training ...

“Ptl Loehmann continued with his emotional meltdown to a point where Sgt Tinnirello could not take him into the store, so they went to get something to eat and he continued to try and calm Ptl Loehmann. Sgt Tinnirello describes the recruit as being very downtrodden, melancholy with some light crying. Sgt Tinnirello later found this emotional perplexity was due to a personal issue with Ptl Loehmann’s on and off again girlfriend whom he was dealing with till 0400 hrs the night before. (Pti Loehmann was scheduled for 0800 the morning in question).”

Some of the comments made by Ptl Loehmann during this discourse were to the effect of, “I should have gone to NY”, “maybe I should quit”, “I have no friends”, “I only hang out with 73-year-old priests”, “I have cried every day for four months about this girl.”

In recommending Loehmann’s dismissal, Polak listed what he said were other performance shortcomings, including Loehmann’s having left his gun unlocked, lied to supervisors and failed to follow orders.

“Due to this dangerous loss of composure during live range training and his inability to manage this personal stress, I do not believe Ptl Loehmann shows the maturity needed to work in our employment,” Polak concludes. “For these reasons, I am recommending he be released from the employment of the city of Independence. I do not believe time, nor training, will be able to change or correct these deficiencies.”