In 2013, Mónica Caballero and Francisco Solar were arrested in Spain, accused of placing an explosive device in a church[1]. The device exploded, causing material damages and slightly injuring one person.
In a trial in 2016, Mónica and Francisco were each sentenced to 12 years in prison[2]. In a 2016 appeal, both of their sentences were reduced to 4 years and 6 months[3]. In 2017, Mónica and Francisco were expelled to Chile, their country of origin[4].
Techniques used
| Name | Description | |
|---|---|---|
| Forensics | ||
| Facial recognition | The main evidence against Mónica and Francisco was a comparison of photos of both of them with public CCTV footage that showed their uncovered faces while they were in the subway, shortly before or after the action[1]. | |
| House raid | During a raid on the home of Mónica and Francisco, investigators found[1]:
| |
| Mass surveillance | ||
| Video surveillance | Public CCTV footage was used by investigators to reconstruct the movements of Mónica and Francisco before and after the action[1]. This showed that they were near the action site shortly before the explosion of the device. | |