( CNN ) -- Police in Mexico City have detained three people in the mysterious disappearance of 12 people from a nightclub , the city 's attorney general said . And for the first time since the disappearance , Attorney General Rodolfo Rios confirmed there is evidence showing that the people who are missing had indeed been at the club . The names of the detainees -- one woman and two waiters from the Heavens After bar -- were not released . Officials said they are looking at the link between the woman and the waiters , but did not say what charges , if any , they might face . Before Tuesday 's announcement , the relatives of the missing people -- one of them only 16 years old -- insisted that they had been kidnapped from the after-hours bar in Mexico City 's Zona Rosa entertainment district . But police had said there was no proof that that the 12 had even been there . `` There is evidence that the majority of the youths arrived at Heaven in two vehicles , one private and a taxi , but it is unknown how they left , '' Rios said . Still , he said , there is no evidence that an armed convoy snatched the group , as the families say . The attorney general also upped the number of missing to 12 from 11 , saying that another family had come forward . The top prosecutor met with the families of the missing to give them an update . `` We are not interested in who took them , we are not interested in any of that , whether they will be punished , or not punished does n't interest us , '' said Carlos Ruiz , the father of one of the missing . `` Our interest is that they all return alive . '' Not all of the 12 people said to be involved knew each other , but most of them hail from the Tepito neighborhood , a place known for its rough character . That alone has added spice to an already sensational story , leading to speculation that gangs could be involved . The young people were taken from the Heavens After nightclub on Sunday , May 26 , between 10 a.m. and noon , family members say . They were forced into a van and kidnapped , they claim . A center for missing persons in Mexico will distribute photos and information about the missing young people across the country . A mass kidnapping would be a significant development because even through the years of drug cartel violence , the capital was a relatively safe place . Recently , however , there is evidence that infighting between local criminal groups is on the rise . More than 26,000 people have gone missing in Mexico over the past six years as violence surged and the country 's government cracked down on drug cartels , according to Mexico 's Interior Ministry . Authorities do n't have data on how many of the disappearances were connected with organized crime .
Three people have been detained in connection with the disappearance of 12 people . Police have not said why these three were detained . The 12 young people were allegedly abducted from a hotel in Mexico City .