In 1970 , he narrowly escaped an assassination attempt at the Patna railway station .
In 1967 , after the defeat of the Congress Government , Jyoti Basu was sworn - in as the Deputy Chief Minister under the Chief Ministership of Ajoy Mukherjee .
In 1970 , Jyoti Basu narrowly escaped an assassination attempt at the Patna railway station .
In 1967 , after the defeat of the Congress Government , Jyoti Basu was sworn - in as the Deputy Chief Minister under the Chief Ministership of Ajoy Mukherjee .