Not possible. Bitcoin transactions do not have IP addresses tagged on them. The IP address that you see on Blockchain.info is the IP of the node for which the transaction is first seen by Blockchain.info. This could be accurate if the node was directly connected to Blockchain.info but the probability of it not being the origin is even higher.
Bitcoin works in a way such that transactions are bounced off and relayed by nodes on the network and it is nearly impossible to trace the origin.
Thank you.
I am in the Enforcement to protect my country against illegal drug. We have made seizures. Our concern is people using Bitcoin to launder money. What are the necessary steps we may undertake to try identify people laundering money in my country.