At 10:50 a.m. on March 11, 2004, Madrid police receive an eyewitness tip pointing them to a white van (see 7:00 a.m., March 11, 2004) left at one of the train stations that had been bombed about three hours earlier (see 7:37-7:42 a.m., March 11, 2004). One investigator will later say: “At the beginning, we didn’t pay too much attention to it. Then we saw that the license plate didn’t correspond to the van.” [New Yorker, 7/26/2004] Police determine that the van was stolen several days before. [El Mundo (Madrid), 4/23/2004] At about 2:00 p.m., police take the van away. Accounts conflict as to whether the van is searched that morning before it is moved or that afternoon after the move (see 7:00 a.m., March 11, 2004). [Guardian, 3/13/2004] Regardless, when it is searched investigators find a plastic bag containing bomb detonators. They also find a cassette tape containing recitations of the Koran. Investigators had immediately suspected ETA, a Basque separatist group, was behind the bombings, and in fact at 1:30 p.m. Spanish Interior Minister Angel Acebes publicly blames ETA for the bombings. But based on the evidence in the van they begin to suspect Islamist militants were behind it instead. [New Yorker, 7/26/2004; Vidino, 2006, pp. 294] That evening, traces of the explosive Goma-2 are also found in the van. This will further point the investigation away from the ETA, since that group has never been known to use that type of explosive (see (8:00 a.m.-Evening) March 11, 2004). [El Mundo (Madrid), 4/23/2004]