CAIRO (AP) — Outside of Cairo's St. Mark's Cathedral, the seat of the Coptic Orthodox Pope, a dozen high-ranking police officers are stationed on all entrances, searching cars and scanning the area, as security measures are visibly beefed up outside churches before Easter prayers on Sunday. A local security source told the AP that agents will be dispersed ahead of Sunday's prayers and a special unit will be formed at the security directorate to receive reports about suspicious individuals in the vicinity of churches. According to SITE Intelligence Group, which tracks online activity of militants, the IS-affiliated Amaq news agency announced on Tuesday that the group has killed 172 soldiers in Sinai since the beginning of the year. The latest church bombings deal another blow to Egypt's struggling tourism industry, which has suffered from political instability and a fragile security situation since the 2011 uprising.