and a person of interest is in custody. he said it's still unknown if it was an act of terrorism. they're still looking into all aspects, obviously. the city has released this map of the parade route where members of the community had gathered to take part. kr cnn's natasha chen spoke earlier to a woman who watched the incident unfold. have a listen. >> you actually live in the apartment complex where the window overlooks the parade and you saw this happen. tell me about that moment you stepped out on your balcony to watch the parade. >> i was watching it for my kids to say i wish you were here. i heard screams and i turned and saw the van plow into the band. it continued down the road to people's park at the end of the block. and then kept going. it didn't stop. he did not stop at all, or she. whoever it was.