Lagos, Nigeria (CNN) Lawmakers in Nigeria's parliament have voted to summon President Muhammadu Buhari to discuss an end to the spate of killings in the country's middle belt.

During a plenary Wednesday, lawmakers also passed a vote of no confidence on service chiefs and security advisers calling for their dismissal.

"We also resolved to summon the Commander-in-Chief of the Armed Forces President Muhammadu Buhari in order to answer pertinent questions concerning what the Executive is doing to put a decisive end to the spate of killings in different states of the Federation," said Yakubu Dogara,Speaker of the House of Representatives.

The legislators said they could no longer watch "our people are murdered in cold blood" and demanded that government increases security measures in affected areas.

We also resolved to summon the Commander-in-Chief of the Armed Forces, @NGRPresident @MBuhari in order to answer pertinent questions concerning what the Executive is doing to put a decisive end to the spate of killings in different states of the Federation. pic.twitter.com/DlY2f2ACU3 — Rt Hon Yakubu Dogara (@YakubDogara) April 25, 2018

At least 19 people were killed Tuesday after gunmen opened fire at a church in Nigeria's Middle Belt, police said.

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