If a person comes into this State in obedience to a summons directing him to attend and testify in this State he shall not, while? in this State pursuant to such summons, be subject to arrest or the service of process, civil or criminal, in connection with matters which arose before his entrance into this State under the summons.

If a person passes through this State while going to another state? in obedience to a summons to attend and testify in that state, or while returning therefrom, he shall not while so passing through this State be subject to arrest or the service of process, civil or criminal, in connection with matters which arose before his entrance into this State under the summons. (1937, c. 217, s. 4; 1973, c. 1286, s. 9.)