' I feel paranoid': Neighbors alarmed after masked man seen on roofs overnight

But now the details on the investigation into a possible prowler in South Philadelphia. Surveillance video that you see here showing a masked man walking on someone's roof deck in the middle of the night over the weekend. Action News reporter Elizabeth Worthington joins us live from police headquarters with more on what we're learning about this. Elizabeth. Yeah, great. People in this neighborhood are feeling really uneasy about this, as you can imagine. So Philadelphia police got a call about a possible trespassing situation overnight on Saturday. And when they got there, a resident said that he saw a man in a ski mask walking across the connected row home roofs near his block. And it looked like he was trying to break into some of them. This trail cam was intended to capture raccoons on this South Philadelphia resident's roof deck. But over the weekend, he caught something far more unsettling. I check it every now and then, and I checked it and saw that 2 in the morning, Friday night going into Saturday morning, there was some guy on my roof deck. Yeah, on my roof deck. Turns out neighbor Bill Fitch saw the same thing happen that night, but he caught him in the act. He looked down at me, and I thought, you know, maybe it's just a guy on a roof in the middle of the night. I don't know, I gave him the benefit of the doubt for no reason. But later, when we went upstairs, I saw him clearly with a ski mask on. He called 911, but the man was gone when police arrived minutes later. We're not identifying the street because neighbors don't want to invite more trouble. They say the person was able to access the roof because of this broken alleyway gate next to what they believe to be an abandoned house. I feel like he's going to come back. I feel paranoid, really. We're locking the doors, we're double-checking things, we're putting bikes in front of doors and things so that if someone were to get in, they would have to knock stuff over. Philadelphia police say criminal trespassing is not limited to entering the inside of a home If someone is on any part of a private residence, knowing they aren't authorized to be there, they can face charges. It's very violating, you know, definitely don't recognize the guy, don't know what he was doing up there. He was poking around, looked like he might have been checking the window or something. So we have a no trespassing sign on our roof now, crazy as that sounds. Now the residents obviously want that broken alleyway to be fixed. Now alleyway gates are technically illegal in the city of Philadelphia, but it's very common practice to have them across the city. A lot of residents will often pitch in for the people on their block to install a gate and then they'll all have a copy of the deed. But again, since it's not officially sanctioned, it is on the property owners to get that installed. For Live Outside Philadelphia Police Headquarters tonight, Elizabeth Worthington for Action News at 10 on THL 17. Okay, Elizabeth, thank you for that update.