various coloured fireball emitting sparks and totally silent

My friend and I were being chased by his brother in my backyard and we simultaneously saw an oval shaped fireball streaking through the sky very low. It was emitting gold, silver, green, and orange sparks and was silent and moved very fast. We thought it hit the top of an apartment building nearby so we ran towards it. My other friend who lived across the street was coming to call on me and also noticed it. When we arrived at the apartment building, numerous people were walking about looking around and talking about it. There was no physical evidence.
Witness indicates that the date of the event is approximate.  PD