Attorney Jerryl Christmas told Reuters he met with Williams for two hours on Monday but was unable to photograph bruising across his client's back and shoulders and marks on his face Christmas says resulted from being beaten by police.
Williams admitted to firing the shots that wounded two policemen early Thursday morning, but said he was not aiming at the officers.
"With regard to the allegations that Jeffrey Williams was 'beaten' by police, the St. Louis County Police Department calls these allegations completely false," spokesman Brian Schellman said in a statement.
Schellman said Williams was arrested, interviewed by detectives, booked and evaluated by a nurse, as every inmate is, to determine whether he was fit for confinement, Reuters reported.