Latest data provided by the Department of Atomic Energy shows that 11 Indian nuclear scientists died in mysterious circumstances during 2009-13, Indian media quoting officials reported on Thursday.

Eight scientists and engineers working in laboratories and research centres of the department died in a blast or by hanging or drowning in the sea.

In its Right to Information (RTI) response to Haryana-based Rahul Sehrawat dated September 21, the department said three scientists of Nuclear Power Corporation had also died mysteriously during the period, of which two allegedly committed suicide and one had died in a road accident.

The bodies of two scientists of C-group posted at BARC, Trombay were found hanging in their residences in 2010, while one scientist of the same grade posted at Rawatbhata was found dead at his residence in 2012.

In one case of BARC, police claims that he committed suicide because of prolonged illness and closed the case while the remaining cases are still under investigation.

Two research fellows died in a mysterious fire in the chemistry lab of BARC, Trombay in 2010.

A scientist of F-grade was found murdered at his residence in Mumbai.

It is suspected that he was strangled but the suspects have not been traced yet. A D-grade scientist at RRCAT also allegedly committed suicide with police closing the case.

Another scientist posted at Kalpakkam allegedly jumped into the sea to end his life in 2013 with the case still under probe whereas a Mumbai based scientist committed suicide by hanging, with police citing personal reasons for the suicide.

One scientist allegedly committed suicide by jumping into Kali river in Karwar, Karnataka. The police again pointed to personal reasons for the suicide.