NEW YORK (CBSNewYork) – Police are trying to track down a group of men behind two violent muggings in Queens.

In both cases, the victims were attacked on the street in Ozone Park, CBS2’s Aundrea Cline-Thomas reports.

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On July 10, a 68-year-old man was punched, kicked and robbed near 117th Street and 111th Avenue. The suspects took $20 and the victim’s backpack.

Surveillance video from the second incident just before 10:30 p.m. on July 29 shows three suspects beat up a 34-year-old man before stealing his wallet and cellphone charger.

“It’s sad what’s going on in this world today. You’ve got to watch – every day – watch over your shoulder,” Queens resident Sandy Tolsi said.

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“We have to increase their patrolling and more security cameras, so they can find out these things,” said resident Ragender Singh.

The victims were not seriously hurt.

“[They’re] not no kind of big thief. They’re just hustling for a little thing. What are they going to do with a cellphone? Sell it?” resident Jairam Renga wondered. “They’re going to get caught. They know when and who to do it with.”

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Anyone with information is asked to call NYPD’s Crime Stoppers hotline at 1-800-577-TIPS (8477) or 1-888-57-PISTA (74782) for Spanish. You can also submit a tip via the Crime Stoppers website, by Tweeting @NYPDTips or by texting a tip to 274637 (CRIMES) and then entering TIP577.