Updated

Police and federal investigators plan to provide an update on their investigation into a package explosion Nov. 22 that seriously wounded a Philadelphia man.

Sixty-year-old James Alden is still healing from shrapnel wounds to his face, chest and arms and needs additional surgeries to repair his badly damaged left hand.

No details on the status of the case were being disclosed ahead of a planned Thursday afternoon news conference.

Authorities said Alden received the padded envelope the night before he opened it inside his apartment.

Investigators said it was set to explode upon being opened.

They have said they don't believe the package was delivered by the Postal Service and say the barcode on it was unusual.

An online fundraiser for Alden had collected nearly $20,000 by Thursday morning.