Remember the Lagos CAC Pastor who was killed by unknown men in May 2017? Pastor Ibukun Adeyinka

https://www.nairaland.com/3843673/cac-pastor-stabbed-death-lagos

On Saturday, 23rd June 2018, the family and members of CAC Sanctuary of Blessing, Iju ishaga marked his first year remembrance of their father, pastor and Mentor, Pastor Ibukun Adeyinka. A Book and an Album were launched to tell the story of a great hero who was a true Christian Soldier until he breathe his last. The book was titled "Life of a True Christian Soldier"

The family also inaugurated a foundation to carry on His legacies. Pastor Ibukun Adeyinka Memorial (PIAM) Foundation founded by the late Pastor's children said the Foundation will carry on the legacies and good works of their late father

That thing on the right side of the picture looks like skull?

DrGoodman:
That thing on the right side of the picture looks like skull?

¹⁶Let your faith be like a shield, and you will be able to stop all the flaming arrows of the evil one.
¹⁷Let God's saving power be like a helmet,
and for a sword, use God's message that comes from the Spirit
- Ephesians 6:16-17

But let us who live in the light, be clearheaded, protected by the armor of faith and love,
and wearing as our helmet, the confidence of our salvation
- 1 Thessalonians 5:8

That thing on the right side of the picture, that to you, looks like skull, is actually is a paraphernalia
In fact what you see in the picture is a shield, a sword and a helmet

I missed this news. Thanks to the OP for providing a link. This is definitely an insider job. The lack of security. The operation being carried out in the dark. The use of knife and I know that knife is not ordinary. The easy way the stabber knew his target in the dark and the lack of struggle all points to an insider job.

If not that Nigerian police are nothing to write home about, this should be an easy case to solve.

May his soul continue to rest in the bossom of our Lord Jesus Christ.