FBI agents and officers from the Miami-Dade police department brought two bloodhounds to help search an area of tropical vegetation next to the Marriott Hotel on Tuesday as firefighters pumped water from the site. At nightfall, they gave up the search for good.
"We didn't find anything," police spokesman Edwin Comemencia told The Associated Press. He declined to say where investigators might look next.
Meanwhile, the father of a 17-year-old Dutch youth who last was seen with Natalee Holloway is filing suit to demand he be allowed to see his jailed son, police said.
The father, a high-ranking judicial official, "is going to file a motion to see his son," police spokesman Edwin Comemencia told The Associated Press. The son is an honors student at Aruba International School.
Judicial officials could not immediately be reached to explain Aruba's laws concerning the detention of minors and their rights.
The latest search came after a former hotel security guard who was released from custody Monday told reporters that he spoke with one of the three youths while he was detained in an adjacent jail cell.
Antonius "Mickey" John said 21-year-old Deepak Kalpoe, of Suriname, told him that he, his younger brother and their Dutch friend lied about returning 18-year-old Holloway to the Holiday Inn on the morning of May 30, the day Holloway disappeared on this Dutch Caribbean island.
Instead, Kalpoe said, they dropped the Dutch youth and Holloway off near the Marriott, about 10 blocks north of the Holiday Inn, John said. The area searched Tuesday, Malmok beach, is next to the Marriott's Palm Beach, and is a popular spot for nighttime lovers.
"He and the brother and the Dutch guy with the girl left, drove to the lighthouse," John told CBS News Correspondent Kelly Cobiella. "On the way back, he dropped the Dutch guy with the girl to the hotel. He and his brother went home."
Kalpoe also allegedly told John that about an hour after dropping the couple off he received a cell phone text message from the Dutch teen, saying he would e-mail Kalpoe as soon as he got home. Kalpoe said the Dutch youth never sent the promised message, John said.
Holloway vanished hours before she was expected at the airport to return home after a vacation with 124 classmates and seven chaperones celebrating their high school graduation in Mountain Brook, Alabama. Her U.S. passport and packed bags were found in her room.
The two Surinamese brothers had told police that the 17-year-old Dutch youth and Holloway were kissing in the back seat of a car, and that when they dropped her off about 2 a.m., they saw a black security guard in a black security jacket approaching her.