The United States says it has been holding intense negotiations with Pakistan to get the country to reopen its border to supplies meant for NATO troops in Afghanistan. 

The U.S. has so far refused Pakistani demands that it apologize for the attack and stop drone strikes in the country. 

A U.S. official says discussions are scheduled to resume Monday. The official spoke on condition of anonymity because of the sensitivity of the issue.

Pakistani Cabinet members and senior military officials are expected to meet Tuesday to discuss whether to allow the supplies to resume. It has been almost six months since Pakistan blocked the line in retaliation for U.S. airstrikes that killed 24 Pakistani soldiers.