An Andhra Pradesh based couple, allegedly behind the spurt in naxal violence in Bihar and Jharkhand, has been arrested in Hazaribagh in Jharkhand. Agriculture scientist-cum-Maoist Central Committee member Ravi Sharma and his wife B Anuradha were arrested last Saturday. Hazaribagh Superintendent of Police Pankaj Kamboj claimed that the two were running the Maoist outfit in Bihar and Jharkhand since 1999.<br/>Police also found one 9 MM foreign-make revolver, cartridges and documents relating to the Maoist operation and its strategies in Bihar and Jharkhand.