The search was illegal because Inspector Callahan - and this is an old story... did not have sufficient probable cause for detaining Mr. Hawkins.
15 seconds sound clip from the Sudden Impact (1983) movie soundboard.
You can hear this line at 00:06:52 in the Blu-ray version of the movie.
Quote context
[...]
- The Court of California is now in session.
- The Honorable Judge Lundstrom, presiding.
- This case is a travesty. You have no evidence whatsoever linking the accused to the murder.
- The gun is inadmissible and the charges against the defendant are dismissed.
- Be assured that I will discuss your case-preparation techniques with the district attorney.
[...]