Boston Police report arresting a Somerville dude at Maffa Way and Cambridge Street in Charlestown for allegedly putting a knife to an acquaintance's neck after the guy refused to give him money for drugs:

... The suspect ... brandished a knife and put it to the victim's neck and threatened to kill the victim if he did not give the suspect some money. At this point, the victim reported that he pushed the knife from his neck causing a laceration to his finger and a scratch on his neck. ...

In Dorchester, meanwhile, police say a South End woman came out of the South Bay Stop & Shop last night and flagged down a guy she'd seen before in a gypsy cab for a ride. When she opened her wallet, the guy allegedly grabbed all her money and ran away. Police, however, report finding the Brockton man - in the store parking lot.

Finally, in a case not involving any acquaintances, Boston Police say they arrested a Roslindale man drug charges in Grove Hall last night - two months after he'd been arrested on similar charges in Braintree. Police say they found Jeury Medina with a billfold full of cocaine and 12 bags of heroin when they asked him to get out of a car that had been reported stolen earlier in the day.

In February, Medina was arrested in Braintree after police say they found nine bags of heroin in his pants. Medina was also arrested on Centre Street in Roslindale on March 30 for larceny over $200.