Three people were killed in Giriftu town, Wajir West, on Thursday following clan feuds over a well in a settlement scheme.
Three other people were seriously injured after two clans clashed.
Northeastern Regional Commissioner Mohamed Birik told the Star on Friday security has been beefed up.
Troubled started when armed men attacked Garse Koftu and killed two men. In retaliation, an expectant woman was also killed.
Birik said four chiefs linked to the clashes have been arrested.
"A special unit from the Rapid Deployment Unit has been sent to clam the situation. The government will not allow the needless loss of lives and destruction of property," he said.
"Communities should find non-violent ways to resolve disputes."
Birik said some politicians and businessmen are being investigated over the clashes.
By the time of going to press, a security team headed by County Commissioner Lyford Kibaara was going to Giriftu town.