Texas Attorney General Ken Paxton on Thursday launched investigations into 30 businesses in the state on suspected fraud and abuse of the H-1B visa programme by operating "ghost offices".

The companies under investigation include Tekpro IT LLC, Fame PBX LLC, 1st Ranking Technologies LLC, Qubitz Tech Systems LLC, Blooming Clouds LLC, Virat Solutions, Inc., Oak Technologies Inc, Techpath Inc, and Techquency LLC, a statement from the Texas Attorney General's office said.