FORT LAUDERDALE, Fla. (AP) — The FBI has laid out a detailed case showing why agents believe a Florida man is behind his estranged wife’s disappearance from her apartment in Spain but gave no indication about what they think happened to her.

Court documents released late Monday show that agents believe David Knezevich resembles the man wearing a motorcycle helmet who spray painted the security camera lens outside Ana Knezevich’s Madrid apartment on Feb. 2. The man left an hour later carrying a suitcase.

Spanish police say they have security video of the 36-year-old Fort Lauderdale business owner purchasing the same brand of paint and duct tape hours earlier. Investigators also interviewed a woman who says Knezevich asked her to translate a text message that was sent to his wife’s friends after her disappearance.

Knezevich’s attorney, Ken Padowitz, has said his client is innocent and was in his native Serbia on the day his 40-year-old wife disappeared, 1,600 miles (2,500 kilometers) away. But agents say Knezevich rented a Peugeot in the Serbian capital Belgrade four days earlier.