Did a search involve state action under the Fourth Amendment where police officers entered a home illegally, an officer there told an inquiring civilian that his brother was suspected of robbing a cell phone, and the civilian then found the phone while accompanied by the officer?

QUESTIONS PRESENTED L DID A SEARCH INVOLVE STATE ACTION UNDER THE FOURTH AMENDMENT WHERE POLICE OFFICERS ENTERED A HOME ILLEGALLY, AN OFFICER THERE TOLD AN INQUIRING CIVILIAN THAT HIS BROTHER WAS SUSPECTED OF ROBBING A CELL PHONE, AND THE CIVILIAN THEN FOUND THE PHONE WHILE ACCOMPANIED BY THE OFFICER? Il. WAS THE DISCOVERY OF THE CELL PHONE UNDER THE ABOVE CIRCUMSTANCES A FRUIT OF THE ILLEGAL ENTRY, UNATTENUATED BY THE CIVILIAN’S INVOLVEMENT? i