If the police come to your house, arrest you, process you into custody and thus take your prints and photograph, you have been arrested for a criminal offense and you have the constitutional right to have an attorney appointed if you can't afford one.
Miranda rights mean nothing unless you gave a statement they are using against you in which case your attorney can challenge the statement.
On what basis did they identify you before the arrest? Just by name? That would be so faulty. Did the business accepting the checks make note of the person's driver's license number, address or anything else?
Giving a private investigator samples of your handwriting is so incredibly stupid I can't find the words for it. So you are telling us that they don't know who wrote the checks really and are on a fishing expedition involving anyone with the same name. The police can NOT rely upon those samples anyway as there was no legal chain of custody. No state attorney/DA is going to rely on the testimony of a p.i. for handwriting comparisons and there is no chain of custody. Stupid all around.
Whoever got that charge issued should be sued for malicious prosecution once you are found not guilty or the charges are dismissed.
How can ANYONE testify in court that you wrote the checks? They can't. This charge should never have issued.
P.S. Writing the newspaper would be a waste of time and you would be libeling yourself in effect. You could also change your position from being a private citizen to being the subject of the news and get attention that you do not want.
Dear posters: The ONLY time police arrest anyone without a warrant is when they witness a crime, or have probable cause to believe a crime has been committed and they know who committed it. A police officer could NEVER arrest anyone legally for a bad check in another county without a warrant.
Also, if a police officer made an arrest for a warrant from another county, the suspect would then to transported to that county to face the charges. The charge has to be tried in the county where the offense was committed. So something is not right about the original post and this entire thread. Also the subject of Fifth Amendment rights is totally irrelevant.

