<p>Four persons including three sanitary workers were found dead in a manhole in Ayyappa society in Madhapur area of Hyderabad. The civic officials suspect that toxic gases caused their deaths.<br /><br /></p>.<p>An employee of 108 Ambulance service, who tried to rescue them, fell ill after inhaling the poisonous gas, said R Kalinga Rao, Madhapur Police Inspector.<br /><br />“The workers were cleaning the manhole. As three of them did not come out after going in, a local resident named Srinivas climbed down to rescue them but he too did not come out,” the police official said.<br /><br />All four were found dead inside the manhole yesterday and their bodies were sent for post-mortem, Rao added. A Greater Hyderabad Municipal Corporation official said these four persons might have died due to inhaling poisonous gases.</p>
<p>Four persons including three sanitary workers were found dead in a manhole in Ayyappa society in Madhapur area of Hyderabad. The civic officials suspect that toxic gases caused their deaths.<br /><br /></p>.<p>An employee of 108 Ambulance service, who tried to rescue them, fell ill after inhaling the poisonous gas, said R Kalinga Rao, Madhapur Police Inspector.<br /><br />“The workers were cleaning the manhole. As three of them did not come out after going in, a local resident named Srinivas climbed down to rescue them but he too did not come out,” the police official said.<br /><br />All four were found dead inside the manhole yesterday and their bodies were sent for post-mortem, Rao added. A Greater Hyderabad Municipal Corporation official said these four persons might have died due to inhaling poisonous gases.</p>