Man arrested for planning attack on church

On a Sunday morning in Paris, police discovered a cache of weapons in a suspect's car and home. The suspect, a 24-year-old computer science student, was planning imminent attacks on churches. Despite previous police checks in 2014 and 2015, no evidence warranted a judicial inquiry. The suspect was also linked to the murder of a woman named Aurélie Chatelain in Villejuif.

What items were included in the arsenal found by the police?

What connection was established between the individual and Aurélie Chatelain?