In Maharashtra, four Naxal supporters were arrested for pasting pro-Naxal posters, from the Sironcha taluka in Gadchiorli district of east- Vidarbha. Police sources said on Thursday, that the arrested persons have been booked for several offences. The Naxals are observing 'martyrs week' and police have beefed up the security arrangements to tackle the situation. A peace rally was also undertaken by the police with the help of citizens and school children in Gadchiroli on Wednesday in order to counter the movement.