The parents of Austin Taylor Bice, the U.S. college student found dead in Madrid several days after he went missing, feel that some things about the case are not clear.

Larry Bice, the father of the 22-year-old collegian whose body was found in the Manzanares River, said in remarks to television reporters shortly after returning from Madrid that many questions still remain to be answered.

“It was a Friday night, the weather was pleasant and there were a lot of people, and so it’s not normal to think that someone can fall (into the river) and nobody notices,” Bice told communications media in front of his home in Carlsbad, California, near San Diego.

The San Diego State University student was attending Madrid’s Carlos III University as part of an exchange program.

He was last seen alive at around 1:00 a.m. on Feb. 26, when he was turned away from a Madrid disco during a night on the town with friends.

Bice’s body was found Monday after authorities drained a stretch of the Manzanares near the disco.

Larry Bice, who was very emotional over the death of his son, said that because the family doesn’t know all the facts yet “we’re not satisfied.”

He added that Austin, a former SDSU football player, “was a good swimmer” and that the banks of the shallow, slow-moving river have stairs at intervals so that people can get out of the water and up to level ground.

Responding to questions from reporters about whether he was confident that Spanish authorities will do a good job regarding investigating the case, Bice emphasized that he had received information about the professional abilities of the Spanish police.

The father added that Austin’s friends told him that the young man had drunk some alcohol but it did not seem that that would have been a factor in his death since apparently he was not drunk.