Potential ICE sighting in Norristown

We live out in Montgomery county, had some people come by and claim to be Verizon workers coming to upgrade FIOS. Our neighbors next door, legal immigrants, mentioned they had asked for ID. There were two when they came to our door, but the neighbors said there were three. Four hours later the same people came back and knocked on the other door next door: this time with all three of them. They left shortly after. It felt very suspicious to us