Patna, Jan 22 : Incarcerated RJD President Lalu Prasad will undergo a CT scan on Friday to ascertain his exact health condition even as a senior officer said he was "stable and recovering". An official at the Hotwar jail in Ranchi said that the former Bihar Chief Minister's health had caused concern after he complained of uneasiness in breathing on Thursday evening. Subsequently, a team of doctors from Ranchi's Rajendra Institute of Medical Sciences examined the RJD leader. Jharkhand Health Minister Banna Gupta also rushed to the RIMS and met with the doctors treating the veteran politician. Jharkhand Inspector General of Police (Jails) Birendra Bhushon said that Lalu Prasad's health had deteriorated on Thursday but was now "recovering and stable". Earlier, Lalu Prasad also underwent a Covid test and was found negative. Lalu Prasad is suffering from kidney ailment, besides diabetes and high blood pressure. The RIMS doctors have diagnosed that his kidneys are damaged to the extent of 75 per cent. Doctors could go for a dialysis if his kidneys' functioning deteriorated further. /IANS