MIAMI, Fla. (CBS12) — The FBI is offering a reward of up to $25,000 for information leading to the location of the remains of Ana Maria Henao Knezevic, a 40-year-old Florida woman authorities say was killed after disappearing in Madrid in February 2024. The agency said all evidence known so far indicates she is dead.

According to the FBI, Henao Knezevic was last seen on surveillance video walking into her apartment building in Madrid at about 1:42 p.m. on Feb. 2, 2024. The bureau said she later took part in a video conference call around 7 p.m. and sent her final text message to friends at about 10:01 p.m.

Investigators said a man believed to be her husband, David Knezevich, was seen on surveillance footage entering the apartment building at about 9:27 p.m. wearing a motorcycle helmet and reflective vest. The FBI said the man spray-painted the building’s only lobby surveillance camera and later left carrying what investigators believe was a rolling suitcase containing Henao Knezevic’s body. She has not been seen since.

The husband,  David Knezevicy, was found dead while in custody, awaiting charges that included kidnapping resulting death, and the foreign murder of a U.S. citizen connected to the disappearance of his wife. (FBI)

The husband, David Knezevicy, was found dead while in custody, awaiting charges that included kidnapping resulting death, and the foreign murder of a U.S. citizen connected to the disappearance of his wife. (FBI)

His estranged wife, originally from Colombia and a naturalized U.S. citizen living in Fort Lauderdale, had traveled to Madrid amid a contentious divorce. She vanished shortly after arriving.

The FBI said David Knezevich rented a dark blue 2019 Peugeot 308 in Serbia and drove to Madrid through Croatia, France and Italy before later returning to Serbia by the same route. During the trip, investigators say he stole multiple license plates to conceal his movements. Authorities believe Henao Knezevic’s remains were disposed of somewhere along the return route between Madrid and Belgrade, including through Spain, France, Italy, Slovenia and Croatia.

The above map depicts the route of travel David Knezevich took on his return trip from Spain to Serbia on or about February 2-3, 2024. (FBI)

The above map depicts the route of travel David Knezevich took on his return trip from Spain to Serbia on or about February 2-3, 2024. (FBI)

The bureau also said two personal items belonging to Henao Knezevic — a distinctive necklace and a journal — were missing from her apartment and may be recognizable to someone who saw them.

During the course of the investigation, David Knezevich died by suicide, the FBI said.

The FBI also said two personal items belonging to Henao Knezevic — a distinctive necklace and a journal (pictured) — were missing from her apartment and may be recognizable to someone who saw them. (FBI)

The FBI also said two personal items belonging to Henao Knezevic — a distinctive necklace and a journal (pictured) — were missing from her apartment and may be recognizable to someone who saw them. (FBI)

According to CBS Miami, David Knezevicy was found dead while in custody, awaiting charges that included kidnapping resulting death, and the foreign murder of a U.S. citizen connected to the disappearance of his wife.

Knezevich had been held without bond since his arrest in May 2024 at Miami International Airport, following a flight from Serbia.

His estranged wife, originally from Colombia and a naturalized U.S. citizen living in Fort Lauderdale, had traveled to Madrid amid a contentious divorce. She vanished shortly after arriving.

According to a federal indictment filed in 2025, Knezevich allegedly traveled from South Florida to Spain “with the intent to kill, injure, harass, and intimidate” his wife, ultimately committing a violent act that resulted in her death.

Investigators said surveillance footage captured a man resembling Knezevich wearing a motorcycle helmet and disabling a security camera outside Henao Knezevich’s Madrid apartment. The man was seen leaving about an hour later with a suitcase.

The husband,  David Knezevicy, was found dead while in custody, awaiting charges that included kidnapping resulting death, and the foreign murder of a U.S. citizen connected to the disappearance of his wife. (FBI)

The husband, David Knezevicy, was found dead while in custody, awaiting charges that included kidnapping resulting death, and the foreign murder of a U.S. citizen connected to the disappearance of his wife. (FBI)

Prosecutors also alleged Knezevich was recorded at a local hardware store, paying cash for duct tape and the same brand of spray paint used in the attack on the security camera.

The case remains an active FBI Miami Field Office investigation.

Anyone with information is asked to contact a local FBI office, the nearest American embassy or consulate, or submit a tip through the FBI tip line.