Robert Omo, a Nigerian residing in Avellino, southern Italy, has been arrested for the murder of a Chinese man in the country.

According to the Times of Malta, Omo, 24, allegedly bludgeoned the Chinese man to death using a hammer. He was also reported to have injured a Bulgarian during the attack.

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The Nigerian was said to have attacked the two men unprovoked on July 30, first striking the 49-year-old Bulgarian from behind and then attacking the 59-year-old Chinese man who had stepped in to prevent him from further assaulting his first victim.

The Bulgarian is receiving treatment in a hospital after sustaining serious injuries from the attack, while the Chinese man died on the spot.

It was also reported that Omo once served a 12-month jail term for bestiality in Malta.

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After serving the jail sentence, he was deported from Malta, but the Nigerian found his way to Italy.

Reports revealed that Omo was once expelled from a care home in Avellino after he assaulted one of its workers.

After charges were brought against him over the recent attack, he pleaded not guilty, claiming he could not recall what happened during the incident.