According to Section 80 E…
In computing the total income of an assessee, being an individual, there shall be deducted, in accordance with and subject to the provisions of this section, any amount paid by him in the previous year, out of his income chargeable to tax, by way of repayment of loan, taken by him from any financial institution or any approved charitable institution for the purpose of pursuing his higher education, or interest on such loan.
"Financial institution" means a banking company to which the Banking Regulation Act, 1949 (10 of 1949) applies (including any bank or banking institution referred to in section 51 of that Act); or any other financial institution which the Central Government may, by notification in the Official Gazette, specify in this behalf.
Any Foreign Bank would not fall within the ambit of “Financial Institution” as mentioned in the Section. Hence, Interest on Loan taken from the Foreign Bank would not allowed as a deduction U/s 80 E.