fˈoːɹ mˈʌnθs ˈæftɚ ðɪ ˈoʊpənɪŋ ʌvðə tɹˈænz mˈaɪlnɪˌoʊ, dˈʊɹɹɪŋ ðə nˈæʃənəl stɹˈaɪk ʌv ˈeɪpɹəl nˈaɪn, tˈuː θˈaʊzənd wˈʌn, ðə fˈɜːst ɐtˈæks ɐɡˈɛnst ðə sˈɪstəm əkˈɜːd.
Four months after the opening of the TransMilenio, during the national strike of April 9, 2001, the first attacks against the system occurred.