Police curfew will be re-imposed in Sammanthurai, Kalmunai and Chavalakade areas from 9.00 p.m. today (01) until 5.00 a.m. tomorrow (02), says Police Media Spokesperson SP Ruwan Gunasekara.Security concerns remained high after extremist militants opened fire and set off explosives at Sainthamaruthu in Kalmunai as the security forces closed in to raid their safe house on Friday (April 26th).