Sin-Offering was Killed in the Same Place As the Burnt-Offering
Source: TTT
Leviticus 4:24
He is to lay his hand on the head of the goat and slaughter it at the place where the burnt offering is slaughtered before the LORD. It is a sin offering.
Leviticus 6:25
“Tell Aaron and his sons that this is the law of the sin offering: In the place where the burnt offering is slaughtered, the sin offering shall be slaughtered before the LORD; it is most holy.