Updated

The widows of four indigenous leaders allegedly slain by illegal loggers in Peru's remote Amazon complained Monday that the investigation into their husbands' September deaths is stalled.

Only two of the four bodies of the Ashaninka leaders have been recovered so far, including of village chief Edwin Chota.

Chota petitioned for more than a decade for title to the ancestral 300-square-mile (80,000-hectare) tract on the border with Brazil, resisting death threats from illegal loggers, two of whom have been arrested as suspects in the killings.

The widows complained on Monday in Lima, which will play host in two weeks to U.N.-sponsored global climate talks, that the investigation is stalled. They say authorities' claim a lack of funds to hire a helicopter to visit the remote village of Saweto.

The widows, who have been staying in the regional capital of Pucallpa, also said they continue to receive threats and fear the journey home, a strenuous three-day river trip.

David Salisbury, a University of Richmond geographer who has long assisted Saweto in its land ownership quest, said the widows don't believe all the killers have been caught.

"The community feels there are more people involved, not just intellectually but materially," he told The Associated Press.

After the killings, Prime Minister Ana Jara promised a thorough investigation. And authorities told the widows they would expedite the land title request.

Chota's widow, Julia Perez, brought the couple's eight-day-old son, to the news conference.

"Without title to our property in the jungle we are nothing. We are rich in natural resources but without titles, without the paper, we can't get loans or economic support," she said.

Indigenous groups are seeking title to more than 77,000 square miles (20 million hectares) of Peru's Amazon, according to the country's main indigenous organization, AIDESEP.

Some of their leaders, like Chota, have lost their lives in the process.

The nonprofit group Global Witness says Peru is the world's fourth most dangerous country for environmental activists after Brazil, Honduras and the Philippines, with 57 slain since 2002.

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Associated Press writer Frank Bajak contributed to this report