( CNN ) -- Mexican authorities on Thursday continued to investigate the kidnappings of at least six people from a Holiday Inn in Monterrey , Mexico , Wednesday . Nuevo Leon state Attorney General Alejandro Garza y Garza said in a news conference that the unidentified gunmen entered a second hotel as well , the state-run Notimex news agency reported . A convoy of between 10 and 15 vehicles carrying as many as 30 gunmen pulled into the Holiday Inn at around 2 a.m. , Garza y Garza said . According to him , the gunmen brought a handcuffed man into the lobby , who gave them information on the intended victims . A businessman from Mexico City , Luis Miguel Gonzalez , was kidnapped , along with three other guests , Garza y Garza said . The other guests were identified as Angel Ernesto Montes de Oca of Mexico City , Manuel Juarez and Aracely Hernandez , an employee of a staffing company near the border with the United States . A hotel receptionist , David Salas , was also kidnapped , together with another hotel employee , authorities said . A security guard at the hotel was missing , but it was not confirmed that he too was kidnapped , Garza y Garza said . Before leaving , the gunmen took the computer from the reception desk as well as the video from the security camera , he said . Minutes later , there was a report of the same group of gunmen entering the Mision Hotel , located near the Holiday Inn . Police responded to the hotel , but the officials there declined to report a crime to the authorities . Northern Mexico , particularly the states of Tamaulipas and Nuevo Leon , have seen a recent uptick in violent activity , much of it blamed on warring drug cartels .
About 30 gunmen stormed into the Holiday Inn at around 2 a.m. Man in handcuffs told gunmen which rooms to go to . The gunman was shot and killed by police after he opened fire on a group of people who were sleeping inside the hotel. Same gunmen reportedly entered a second hotel .