Nearly 100 schools in Delhi-NCR received bomb threats via email on May 1, warning them of bombs on their premises, Police have initiated search operations following the alerts. Initial investigations suggest multiple Delhi schools have received similar emails of bomb threat in Delhi. Meanwhile, Delhi Government’s Directorate of Education has issueed advisory to schools after the hoax call directing the school authorities to inform immediately to the concerned DDE and the Delhi Police. According to details, the probe will be done by the Counter Intelligence Team Special Cell. Meanwhile, IFSO unit is also trying to find out the origin from where the mail was sent, added the agency, saying, the connection to Russia – IP address – has been revealed. Apart from this, the probing agency is also probing the angle of joint conspiracy between China and ISI.