Conversation so far:
When did Patrice Lumumba's deposition of Kasa-Vabu happen?
5 September 1960, Kasa-Vubu announced the dismissal of Lumumba. Patrice Lumumba heard of the firing and made three broadcasts, defending his government and declaring Kasa-Vubu to be deposed
What was the joint session in which Patrice Lumumba was in about?
The Parliament held a joint session between the Chamber of Deputies and the Senate. Though several members short of a quorum, they voted to grant Patrice Lumumba emergency powers.
Why did the Congolese Parliament give Patrice Lumumba emergency powers ?
Patrice Lumumba accused obstructionist politicians and ABAKO of using the presidency as a front for disguising their activities.
How long did Patrice Lumumba's emergency powers last?
On 14 September Mobutu announced over radio that he was launching a 'peaceful revolution' to break the political impasse and therefore neutralising the President, Patrice Lumumba's and Iléo's respective governments
Did Mobutu's people put Patrice Lumumba in jail?
Patrice Lumumba was forcibly restrained on the flight to Elisabethville on 17 January 1961. On arrival, he and his associates were conducted under arrest to the Brouwez House
What did Patrice Lumumba do after the house arrest ?
Patrice Lumumba, Mpolo, and Okito were lined up against a tree and shot one. The execution is thought to have taken place on 17 January 1961, between 21:40 and 21:43

Question: Where did he go ?
Self-contained rewrite: Where did Patrice Lumumba go to be executed?