Patna, Jan 4 (IANS): The cyber cell of the Bihar Police has begun a probe into the use of social networking site Facebook by jailed gangster Santosh Jha, police said on Monday.

Jha's role is in question over the sensational killing of two engineers of a private road construction company allegedly for not paying ransom last month, police said. 

Jha, currently lodged in Gaya central jail, is a Maoist-turned gangster. He is wanted in over 40 criminal cases and was arrested by a Bihar Police team from Kolkata in 2014. 

He has been regularly updating his Facebook and he is in contact with his shooters and other member of his gang through it.

Mukesh Pathak, main accused in killing of two engineers, is Jha's friend on Facebook.

Jha's sharp shooter Pathak, who was lodged in the Sheohar jail until July last year, had escaped from Sheohar hospital while undergoing treatment there. After that he is leading the gang's operations, allegedly at Jha's behest.

"After we got information that Jha is on Facebook, cyber cell has began a probe into who is updating his Facebook account. It is not sure whether Jha was using Facebook from behind the bars," DIG Saran Ajit Kumar Rai said.

According to police, Jha is wanted in many cases including murder, kidnapping, extortion and land mine explosion.

Jha, a resident of Bihar's Sheohar district, raised the private army Parshuram Sena and targetted road contractors in Bihar and businessmen in Nepal, police said.