Among those who have been charged for the attack are two CPI-M legislators C. Krishnan and K.K. Narayanan and three former legislators P.K. Sreemathi, P. Jayarajan and M.V. Jayarajan.
Doctors Monday morning said Chandy's condition is stable.
Though Chandy asked his party men not to observe a state-wide strike, shutdowns were reported at several places across the state.