Kolkata, Sep 3 - West Bengal Chief Minister Buddhadeb Bhattacharjee Thursday mourned the death of his Andhra Pradesh counterpart Y.S. Rajasekhara Reddy in a copter crash.

'His death has made me deeply sad. I had good relations with him,' Bhattacharjee told newspersons.

'I knew him closely. We had met several times in New Delhi. We had discussed various matters,' he said.