The visit had been advertised for weeks. Former President Rodrigo Duterte of the Philippines was going to a rally in Hong Kong during the second weekend in March. But as soon as it began, the trip took on a tantalizing element of intrigue: Was he ever coming back?

       To many Filipinos, it appeared that Mr. Duterte was trying to outrun justice. The International Criminal Court, a sudden swirl of speculation in the Philippines posited, was about to seek his arrest, years after it started investigating the deadly antidrug campaign he had overseen as president and as mayor of Davao. By being in Hong Kong, the theory went, Mr. Duterte would remain free because China is not a member of the court.

       Soon after Mr. Duterte, 79, landed in Hong Kong on March 7, the I.C.C. issued a sealed warrant for him. But wind of the move reached him.

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       Over that weekend in Hong Kong, his entourage — which included his partner, Honeylet Avance？a, and daughter Sara Duterte, the current vice president — debated whether to stay in Chinese territory or return home, according to two Philippine officials and a former lawmaker who spoke on the record and cited Philippines intelligence.

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       On March 9, the day before his arrest in the Philippines, Mr. Duterte was in Hong Kong, addressing a crowd of Filipinos at a rally.Credit...Anthony Kwan/Getty Images

       Salvador Panelo, his lawyer, disputed that account, saying Mr. Duterte had not even discussed seeking asylum in China. “Why would Duterte escape?” he said. “At his age, he no longer cares about what is going to happen to him.”

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