According to a Pirates press release, the Pirates have recalled Starling Marte from AAA Indianapolis. To make room for Marte on the 40-man roster, Pedro Alvarez has been placed on the bereavement list.
The bereavement list is usually reserved for someone seriously ill or a player who recently experienced a death in the family. He may remain on the list for 3-7 days. Whatever the situation is surrounding Pedro, wish him all the best. This should be a much needed mental break for him to step away from on field issues.