four Chicago police officers executed a search warrant for a house located at 32 North Fifth Avenue in Des Plaines, which, at that time, was leased to the *145 defendant and his wife. Present at the time of the raid were the defendant, his wife, their two children, and William Hahn. One of the officers conducting the search, Patrick Darcy, who testified on behalf of the State, stated that he announced his office and his purpose when the defendant opened the door. Despite the defendant's attempt to shut the door, Darcy said he was able to gain entry. Darcy testified that, after entering the house, he saw the defendant run into the bathroom with what looked like a blue and black tool-box and slam the door. Darcy brokedown the bathroom door and saw the defendant take a clear plastic bag containing a white powder from the box, throw it into the toilet, and flush the toilet. Darcy was able to retrieve the bag and its contents, which were subsequently introduced into evidence at trial. Darcy then took the defendant to the front of the house and placed the defendant, his wife, and Hahn under arrest.
Darcy's partner, George Graham, also testified for the State and corroborated Darcy's testimony regarding the events leading up to the arrests. Graham testified that he seized the blue and black box in the bathroom, took it to the front of the house, and inspected its contents. Graham said the box contained testing kits, a plastic bag containing nine blue tablets with