The total number of COVID-19 casesin Maharashtra's Thane district neighbouring Mumbai crossed the 100 mark on Monday, officials said.The latest tally of the positive cases from Thane, Kalyan-Dombivli, Navi Mumbai, Ambernath, Bhiwandi and Badlapur stood at 106 with four deaths so far.A total of 21 people have been found positive for coronavirus in Palghar district with four deaths so far, they said.Meanwhile, police on Monday raided a factory in Wada taluka and seized a huge stock of sanitisers worth Rs 20 lakh, a police official said.