(CNN) -- Chelsea midfielder John Obi Mikel has made an emotional appeal after his father was abducted in his native Nigeria. 

"Please just let him go," he told Sky Sports News. 

"He's just an old man, he hasn't done any harm to anyone as far as I know and I don't know why he has been taken." 

Michael Obi, who runs a transport company in Jos, the main city in Plateau State in central Nigeria, has not been seen or heard of since he failed to return home from work last Friday. 

Obi Mikel was told of the problem just before the start of Chelsea's Premier League match at Stoke Sunday which finished goalless and said his father was at the forefront of his thoughts throughout the match. 

"Nigeria is the country I am from, I've always tried to help my country in any way I can, playing for my country or anything," he said. 

"This is a time where I need the country to help me. Whoever has got my dad, whoever knows where my dad is, please contact me and hopefully he can be released." 

Chelsea have given Mikel their support in a statement on their official website. 

"Everyone at Chelsea Football Club was very concerned to hear that John Mikel Obi's father has been reported as missing and possibly abducted. 

"We will give Mikel and his family our full support at this most difficult time." 

Mikel confirmed they had not heard from his father's abductors and no ransom had yet been demanded.  QUESTIONS:

Q1:
1. What is the name of a Chelsea player?
2. Who is on Chelsea's team?
3. 
Q2:
1. Did something happen to one of John Obi Mikel's family members?
2. Did someone in John Obi Mikel's go through something?
3. 
Q3:
1. Which family member of John Obi Mikel's went through something bad?
2. Who in John Obi Mikel's family did something bad happen to?
3. 
Q4:
1. Who is John Obi Mikel's dad?
2. What is the name of John Obi Mikel's father?
3. 
Q5:
1. What happened to John Obi Mikel's father?
2. What happened to Michael Obi?
3. 
Q6:
1. Where was John Obi Mikel's father kidnapped?
2. In what country did Michael Obi get abducted?
3. 
Q7:
1. What does John Obi Mikel do on the Chelsea team?
2. What position does John Obi Mikel play?
3. 
Q8:
1. When did John Obi Mikel learn about his father's abduction?
2. When was John Obi Mikel informed of his dad's kidnapping?
3. 
Q9:
1. Before what match did John Obi Mikel learn about what happened to his dad?
2. What was John Obi Mikel about to play in when he got the news about his father?
3. 
Q10:
1. What day of the week was the Premier League?
2. When in the week was the Premier League?
3. 
Q11:
1. Where was the Premier League?
2. What was the location of the Premier League?
3. 
Q12:
1. Is John Obi Mikel receiving support from his team?
2. Is John Obi Mikel's team supportive of him?
3. 
Q13:
1. What's the proof that John Obi Mikel's team is supporting him?
2. How do we know that Chelsea is there for John Obi Mikel?
3. 
Q14:
1. Where is John Obi Mikel from?
2. What is John Obi Mikel's home city?
3. 
Q15:
1. Are the demands of Michael Obi's kidnappers known?
2. Do we know what the men who took John Obi Mikel's dad want?
3. 
