One person was arrested by troops in Dheisheh, the Palestinian Prisoners' Club advocacy group said.
The official Palestinian news agency Wafa said the army had entered the camp "at dawn and launched a campaign of raids on citizens' homes."
Mourners gathered later Monday for Khmour's funeral, with his mother leading the procession of his body through Dheisheh.
His body was wrapped in a red and white keffiyeh scarf and a Palestinian flag, before being carried by militants from the Popular Front for the Liberation of Palestine (PFLP).
Khmour is the fourteenth Palestinian killed in the West Bank since the start of the year, including civilians and fighters, the majority shot dead by Israeli forces, according to an AFP tally.
Following a series of fatal attacks targeting Israelis last March and April, Israeli forces launched near-nightly raids in the West Bank in which scores have been killed.
The violence in 2022 made it the deadliest year in the West Bank since United Nations records began in 2005.
At least 26 Israelis and 200 Palestinians were killed across Israel and the Palestinian territories last year, according to AFP figures.