DUBAI, United Arab Emirates — A brother-in-law of Osama bin Laden, who is wanted in the Philippines for alleged terror financing, was killed in Madagascar in what appeared to be a burglary, the victim’s brother said yesterday.

Jamal Khalifa, who was married to a sister of the Qaeda leader, was killed when gunmen broke into his house in a Madagascan village on Tuesday, his brother Malek Khalifa said in a phone interview from his home in Jiddah, Saudi Arabia.

Malek, who was distraught when recounting his brother’s death, said between 25 and 30 armed men broke into Jamal’s house “while he was sleeping ” and killed him. “They stole everything — his computer, all of his things,” he said.

Malek said he did not have more details because his brother was a Saudi citizen and Saudi Arabia did not have an embassy on the East African island. He said his concern was “to collect my brother’s body.” He said Jamal was in Madagascar on business, and his wife and family were in Saudi Arabia.

Malek abruptly ended the call with the Associated Press, but was quoted by the Al-Arabiya satellite TV channel as saying that Jamal mined and traded precious stones in Madagascar.

The Philippine government sought Jamal for allegedly financing the Abu Sayyaf, a militant group, through a charity organization in the 1980s and early 1990s.

But Jamal reportedly denied this, most recently in a letter that was published Saturday in a Philippine newspaper, the Daily Inquirer. “I have never given any money to any person or group, and certainly not to the Abu Sayyaf,” according to the letter.

America named Jamal as an “unindicted co-conspirator” in the 1993 World Trade Center bombing in New York, and arrested him the following year on a visa violation in San Francisco. But he was deported without standing trial.

In his Daily Inquirer letter, Jamal said he had a “disagreement” with Mr. bin Laden and left Afghanistan in 1986, “and we have been apart from each other since then.”