The son of slain Gulf Cartel leader 'Tony Tormenta' has been arrested following an incident outside a Matamoros hotel popular with tourists from the Rio Grande Valley. The Mexican Navy (SEMAR) confirmed that marines arrested 23-year-old Ezequiel Cardenas-Rivera during a special operation late Friday night. It all happened outside the Gran Hotel Residencial just off Avenida Alvaro Obregon just south of the B&M International Bridge. Witnesses told Action 4 News that marines had the hotel surrounded and had made numerous arrests early Saturday morning. The Gran Hotel Residencial is a popular spot for wedding receptions and other events drawing residents from both sides of the border. It's also the same hotel where a large group of Mexican federal police have been staying since last year. Arrest Details In a statement released Tuesday morning, SEMAR officials confirm that the whole incident stemmed from an anonymous tip. Cardenas-Rivera and four others had been at a party inside a building off Avenida Alvaro Obregon. Marines allegedly saw armed men leaving the party inside three vehicles. But SEMAR officials reproted that Cardenas-Rivera and the four others were arrested without the exchange of gunfire. Authorities identified Cardenas-Rivera as the son of slain Gulf Cartel leader Antonio Ezequiel Cardenas-Guillen, who went by the nickname "Tony Tormenta" and was killed in a gun battle with soldiers back on November 5, 2010. Other Arrests The others four arrested outside the ...