Pakistani police have made two more arrests in the search for kidnapped US journalist Daniel Pearl.
The two men were arrested in Islamabad in recent days, bringing to 16 the number of people arrested since Pearl went missing in January.
Police said the arrests related to phone calls made from a mobile telephone.
The first charges relating to the kidnapping were made on Friday against three men who have admitted to sending e-mails containing threats to kill Pearl and photos showing him in chains with a gun at his head.
The Wall Street Journal correspondent, 38, vanished while researching a story in Karachi.
Meanwhile the Pakistani president, Pervez Musharraf, claimed an Indian link to the abduction, in an interview with the Washington Postpublished at the weekend.
He said calls to two Indian MPs and a cabinet minister from the same phone used to summon Pearl to a Karachi restaurant 17 days ago suggested a link between Omar and New Delhi.
"It does very much make sense to me," Musharraf insisted when asked how it was possible that Jaish, which is devoted to fighting Indian rule in disputed Kashmir, would collude with its greatest enemy, the Indian government.
"It makes sense to me because ... the leader of Jaish-e-Mohammad was in jail for seven long years in India and he wasn't even tried," the president said.
New Delhi has roundly dismissed the charges and on Sunday Indian Prime Minister Atal Behari Vajpayee poured scorn on Musharraf's claims.
"Musharraf is trying to shift his own blame on to India by making such an allegation," Vajpayee told an election rally gathering in the northern state of Punjab.
Musharraf's comments precede a meeting with US President George W Bush in Washington this week.
AFP