Commuters who use the Kibera route have raised concern over their security in matatus during peak and off peak hours.
It is alleged that pick pockets usually collaborate with some of the matatu touts who help them in stealing various goods from the passenger's pockets and handbags.
The pick pockets who usually operate in a gang of 3 to 5 people carrying what looks like empty bags on their backs station themselves at Railways bus station, Hurlingham and at the junction of Nakumatt prestige.
According to one Jay Kamau, a frequent user of the route, they operate in a manner in which the person who is getting robbed will never realise until he or she alights the vehicle.
"It is like they have studied to pick pocket and they know where the item they want is located, what they do is that they enter a vehicle and 2 of them sit at the back while 1 of them sits with the driver," said Kamau.
He added that the pick pockets use various techniques to lure their victims including dropping of coins to floor of the matatu and asking a passenger to pick them up.
"One of the thieves will intentionally drop a few coins and while you are trying to pick up the coins another pick pocketer peruses your pocket and steals from you without you realising it," he said.
Kevin Ndung'u, a matatu driver also says that he knows the pick pockets and so while dropping off passengers, he never allows them to board his matatu.
"We are loosing customers because of these people who steal from innocent passengers therefore whenever i see them i do not allow any of them to enter my vehicle because all they bring is trouble and losses," said the driver.
Various illustrator artists have urged drivers and conductors to buy the stickers they sell which are usually branded 'beware of pick pockets' to help them promote their business and security of passengers.