Francesca Eastwood -- Accused Of Breaking Into Ex-BF's Home

Francesca Eastwood was questioned by cops after neighbors of her ex-BF Tyler Shields reported someone was burglarizing his L.A. home, TMZ has learned.

Sources close the situation tell us police got to Shields' house Saturday evening, and found a front door window had been smashed ... and Eastwood was carrying stuff out of the house. Shields was not home at the time.

A source close to Eastwood tells TMZ it wasn't a burglary because Francesca's name is still on the house lease, and she was merely retrieving her own personal belongings -- including clothes and pictures.

Law enforcement sources tell us ... Shields -- a well-known celeb photographer -- showed up at the house while Eastwood was collecting her stuff. Officers stuck around to maintain peace until she left.

We talked to Shields afterward -- while he was cleaning up the mess from the broken glass.