Chief Secretary Deepak Kumar, alarmed by the spurt in cases, directed the divisional commissioner and the deputy inspector general of Saran to leave for Siwan and camp at Panjwar village in Raghunathpur block that has 18 of the total cases reported since Thursday.
They have been directed to enforce a complete lockdown there.
With 29 cases, Siwan accounts for nearly half of the total number of people having tested positive for COVID-19 in Bihar. Four persons have recovered.
Gaya has five cases, while Begusarai where many had tested positive, is now left with four active cases with the recovery of one person.
Munger and Patna which had reported seven and five cases, respectively have zero active cases. Munger also accounts for the sole COVID 19-related death in Bihar.
According to the data shared by the state health department, the number of samples tested till 10 am on Friday at the four testing facilities in Bihar three at Patna and one at Darbhanga was 5,457.