CHICAGO  Police have arrested an 18-year-old for the fatal stabbing of a South Side man who worked as a bartender.

Keante McShan, 18, of Chicago, is charged with first-degree murder and armed robbery after assaulting 41-year-old Diego Damis on Friday, Feb. 25.

Authorities say around 6 a.m., McShan robbed and stabbed Damis to death as he walked home from work in 4900 block of South Greenwood Avenue, about a mile away from the bar where he worked.

Police placed McShan in their custody one week later, on Friday, March 4.

Family members spoke with WGN News Sunday, saying the news was bittersweet.

“He is not coming back,” Damis’ mother Rosa Bejar said. “My son is not coming back.”

Prosecutors say strong evidence links McShan to the slaying. Authorities allege Damis left work at the Cove Lounge and was walking home when McShan approached him, stole his wallet and stabbed him in the chest and stomach.

Damis was two blocks away from his home.

“I think he’s a monster,” Damis’ sister Claudia D’Amico said. “He does not have any humanity; to take a random person’s life like that just because my brother was in the wrong place at the wrong time.”

On Friday, friends and family of Damis’ walked the route he took home, hoping to raise awareness about the Italian immigrant’s killing.

They say they’re grateful it happened so quickly.

“Justice has to be served. Actions have consequences,” D’Amico said. “It’s a shame we’re never going to recover from but we’re going to take it day by day and stick together as a family and continue to remember my brother.”