FOX NEWS: DEVELOPING: Twenty students were wounded — four seriously — during multiple stabbings at a high school near Pittsburgh and one person is in custody early Wednesday, emergency officials say.

Dan Stevens, a spokeswoman for Westmoreland County emergency management, told FoxNews.com that the male suspect is in custody following the incident at Franklin Regional High School in Murrysville, roughly 15 miles east of Pittsburgh.
<brIt's unclear if the suspect and the victims are students, adults, or a mix of both. Four of the victims were taken to area hospitals via helicopter. Those injured were between 14 and 17 years old, Stevens said, adding that not all of them were stabbed or slashed with a knife.