Holyoke murder is the city's second this year

Police said they had a few credible leads suggesting what might have occurred, but no arrests have been made.

“We think we know what happened,” Captain Arthur Monfett said late Sunday afternoon, adding that he could not elaborate or release any details on their findings.

Police said more than one shot was fired, but it was not clear yet how many bullets hit Hernandez.

The murder was Holyoke’s second this year, according to police.