MIDLAND CITY, Ala. (AP) — Authorities have released a photo of a man they say killed a school bus driver and abducted a 5-year-old boy before taking refuge in an underground bunker.

Police on Friday released a photo of Jimmy Lee Dykes. Authorities say Dykes and the kindergartner have been in the bunker since the school bus shooting Tuesday.

Authorities say they have been talking to Dykes through a pipe leading to the bunker, but they have not revealed what the conversations have been about.

There are signs the standoff could go on for some time. The shelter has electricity, food, TV, and police have delivered the boy’s medication through the 4-inch-wide pipe.