The National Environment Management Authority (NEMA) has closed three companies indefinitely following claims that they have been emitting toxic gases in Nairobi South area.

The move comes after Environment Cabinet Secretary Keriako Tobiko last week Monday ordered for the immediate investigation into persistent emission of toxic gases at night by some industries in the area.

Mr Tobiko has directed the National Environment Management Authority (Nema) and the National Environmental Complaints Committee, led by Dr John Chumo, to send a team to the ground and prepare a preliminary report to be presented back to him by Tuesday.

“I have directed the two agencies to go on site today (Monday), investigate and present a report to me tomorrow (Tuesday). The matter is now in my hands and we will take it forward,” said Mr Tobiko on Monday.

The directive by CS Tobiko comes after complaints by Nairobi South residents for more than a month now that certain factories operating in the area have been intentionally emitting poisonous gases at night that has left at least four children hospitalised and many more facing respiratory complications.


Dr Chumo said that they are already on the ground and have begun investigations to know where the problem is coming from as well as find out what could be the remedy.

“We don’t know how long it will take. The investigation is scientific and involves analysis and find out what it is using equipment already on the ground by Nema. We will give him the first report before preparing a final one,” he said.

The residents have complained that the emissions have left them suffering from nose bleeding, persistent coughing, vomiting and sore eyes, among other complications; calling for authorities to investigate and nail the culprit factories.