Philadelphia Mayor Michael Nutter says he is concerned about a recent uptick in violence in both the schools and on the streets. He said he's working hard to fight the increase.

"Some of the things that have happened at the beginning of this year, I mean (are) unexplainable," he said Tuesday. "A guy in a house slits the throats of two people, three guys jump out of a car and beat someone to death ... you can't explain any of this. So of course people are concerned, I'm concerned."

The mayor says more police are on the way to help with the violence, but citizens and parents need to think about their actions, take responsibility and teach children about the consequences of their actions.

"I understand sometimes especially our younger kids may not fully understand some of the things that they do or the consequences, but they have to be made to understand those things as I was made to as I grew up as a child in Philadelphia," Nutter said.

Even with the increasing school violence, Nutter said cuts to school police staffing are needed to help balance the district's budget.