The man accused of killing a Calgary mother and her five-year-old son in the northwest community of Evanston is facing more charges today.

Guevera Wilson Clorina, 26, was charged with two counts of second-degree murder last May.

He was also charged last June with sexual interference and sexual assault of a 15-year-old girl over a three-year period. 

CBC News has learned that Clorina now faces charges of making and possessing child pornography.

The police investigation started when the bodies of Chona Manzano and her son Gabrial were discovered in their home on May 16, 2013.

An autopsy confirmed they had been stabbed to death.

Court documents show Manzano may have learned about an inappropriate sexual relationship before her death.

Clorina is the cousin of Manzano's husband.