Top Rank promoter Bob Arum's son has been reported missing, forcing Arum to leave the three-city press tour that kicked off in Los Angeles on Tuesday to promote the Nov. 13 Manny Pacquiao-Antonio Margarito junior middleweight title bout.
John Arum, 49, was reported missing Sunday after hiking in mountains north of Seattle, Top Rank spokesman Lee Samuels said.
"We got a call today that he had gone hiking and is missing, so Bob told the staff this morning that he would leave the tour and take a flight to Seattle," Samuels said. "Bob and his wife, Lovee, have left the tour and proceeded to Seattle."
According to The Associated Press, park rangers in the Cascade Mountains are searching for John Arum, who hiked Storm King Peak during the weekend.
Bob Arum could not be reached for comment, but he told the Los Angeles Times before leaving for Seattle, "They've got search parties looking for him right now."
According to the AP, John Arum, an environmental lawyer, is an accomplished hiker and has been on a quest to climb the 100 highest summits in Washington.
The promotional tour for the Pacquiao-Margarito fight continues on Wednesday in New York and then will move to Dallas on Thursday for two days. Top Rank president Todd duBoef, Arum's stepson, will run the news conferences in place of Arum.
"We're keeping our fingers crossed," duBoef told the AP on Wednesday. "The last I talked to Bob, they were sending a helicopter up, but the area where he's missing, there's so much timber that it's hard to see anything. We're just waiting to hear something."
The Pacquiao-Margarito fight will take place at Cowboys Stadium in Arlington, Texas, where Pacquiao will fight for the second consecutive bout. He outpointed Joshua Clottey there on March 13 in a welterweight title bout.
Dan Rafael is the boxing writer for ESPN.com; follow him on Twitter @danrafaelespn.