The tribune news says the deadly assault on India's financial capital Mumbai on 26/11 was 'blamed' on the Pakistan-based Lashkar-e-Tayyaba (LeT) militant group. The report says this caused rift between the nuclear-armed neighbours.
In 2009, Pakistan charged seven men over the attacks. However, they demanded that they need more evidence against them.
Rizwan Abbasi, a lawyer for the accused, on Monday said the Indians only had themselves to blame for the slow progress.
"This case has many legal flaws and lacks evidence. It is being delayed in Pakistan because India has failed to provide required evidence against the accused," he said at a conference.
"By hanging Kasab, India destroyed the only living evidence of these attacks and created problems for investigations in Pakistan," Abbasi said.
The lawyer continued that in July last year Pakistan told India that fresh evidence in the case was inadmissible because Pakistani lawyers were not given the chance to cross-examine Indian officials. Abbasi claimed the dossiers handed over by India contained only "information and no solid evidence".
"There was also no proof that the attackers had any link with my clients because the phone numbers Indian authorities said were used for the contacts were not of Pakistani companies," he said.
(Witha agency inputs)