NEW YORK (CBSNewYork) — Police are investigating two violent muggings that happened in Central Park, one of which involved what was described as a gang of more than a dozen teenagers.

As CBS2’s Hazel Sanchez reported Sunday, the first attack happened around 7:30 p.m. Saturday in Heckscher Playground near the southern end of Central Park.

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Police said a group of about 15 teens attacked a man and woman sitting in the playground.

The attackers threatened the pair with a knife and Taser, Sanchez reported. One of the attackers also chased the male victim with the knife, but did not injure him. Another one of the attackers punched the 17-year-old woman in the face before taking off with both of the victims’ cell phones and the woman’s wallet.

The second attack happened around 1:30 a.m. Sunday as a 45-year-old Bronx man was walking along the 81st Street transverse. That suspect tried to choke the man before running off with his wallet, Sanchez reported.

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Parkgoers on Sunday were uneasy after learning about the attacks.

“I’m totally shocked! I mean, any place, but especially here. I am really shocked,” said Upper West Side resident Gun Bauchmer.

“In Central Park, a place like this? You don’t think that can happen, you know,” said Rachel Mitskaris, of Riverdale. “It’s scary. I’m feeling like I have to watch my stuff right now, you know?”

“(Does it make you nervous, you’re here on your own) Right now, yes Because I didn’t know that. I’m surprised and now I’m a little bit nervous,” said Raphael Villegas, of Washington Heights.

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Police said the robberies are not connected and no one was seriously injured. The suspects in both cases are still on the loose.