Four men have been arrested in connection with the kidnapping of an American woman who was on safari in Uganda. Kimberly Sue Endicott and her safari guide were snatched at gunpoint last week, and released on Sunday after ransom money was paid. Endicott was handed over to the U.S. Embassy in Uganda on Monday and is heading home. The four suspects were being interrogated by police on Tuesday, according to CBS News. They’re believed to be illegal fish traders and ivory smugglers. The FBI reportedly provided assistance in the search for the kidnappers. Ugandan police said they had carried out “raids and extensive searches in Kanungu district, where the suspects were arrested and the neighboring areas.” On Monday, Donald Trump demanded the capture of the Ugandan kidnappers and said the country's tourism industry would suffer if they weren't brought to justice.

Editor’s Note: This story has been updated.